1916. Five-page ALS from W. M. Hutchings to Cottrell, dated March 21st, 1916, discussing some past difficulties in Hutching’s chemistry research and Cottrell’s progress in that area, which Hutchings requesting that Cottrell send one of his papers. In Very Good minus condition. Written on two four-page Cookson & Co. memorandum cards. Cards are lightly age toned and faintly creased, with rust marks on the top margins. Small stains on the first page; pencil bracket in the left margin of the second page. Written in black ink, signed by Hutchings: “W. M. Hutchings”. Shelved at DuPont Cottrell binder. More

1925. One-page TLS from businessman E. A. W. Jefferies to Cottrell, dated August 17, 1925. In Very Good condition. Discusses an experiment of Jefferies’ regarding the production of Liquid Air. On Jefferies-Norton Corporation letterhead. Light wrinkling, some staple punctures, and a small closed tear in the top edge. Signed in black ink by Jefferies: “EAW Jefferies”. Shelved at DuPont Cottrell binder. More

1926. Two one-page TLS's from Herbert Hoover, each part of an exchange with Cottrell. In Very Good condition. Includes a 2-page facsimile of Cottrell's response. First Hoover TLS sent February 5, 1926; Cottrell's response sent February 8, 1926; Hoover's second TLS sent February 12, 1926. In his first letter, Hoover asks Cottrell about the potential improper investigation of a new method of creating aluminum by the Bureau of Mines. In the second letter, Hoover thanks Cottrell for clearing up the issue. Hoover's letters are on Department of Commerce letterhead. Letters show faint creasing from past folding, and small puncture marks and wrinkles where they had previously been stapled. Small pencil mark in top margin of first letter. TLS's signed in black ink by Hoover: "Herbert Hoover". Shelved at DuPont Cottrell binder. More

1920. One-page TLS from U.S. President Herbert Hoover to Cottrell, dated September 17, 1920. In Very Good minus condition. Brief letter of thanks for Cottrell's forwarding another person's letter to Hoover. On Hoover's personal letterhead. Faintly stamped, "Received / 1920 Sep 18 / Interior Department Bureau of Mines / Washington D.C.". Small rust marks and light wrinkling along the top margin; faintly creased. Signed in black ink by Hoover: "Herbert Hoover". Shelved at DuPont Cottrell binder. More

1923-1926. Group of four signed letters from notable U.S. Senator and creator of the Tennessee Valley Authority, George W. Norris. Group includes the following: One-page TLS to Henry Wallace, dated February 12, 1923, inquiring into the work of Cottrell’s Fixed Nitrogen Laboratory. In Very Good condition. On U.S. Senate letterhead, lightly age toned and faintly creased. Secretarial signature from Cottrell’s lab beneath date. Receipt stamps on reverse side. Mildly wrinkled, with small rust marks on top margin. Some pencil underlining present. Signed in black ink by Norris: “G. W. Norris”. One-page TLS from George W. Norris to H. M. Bain, dated February 14, 1923, referencing an attached letter not included here and requesting it be passed along to Cottrell’s Fixed Nitrogen Research Laboratory. In Very Good condition. On U.S. Senate letterhead, lightly age toned and faintly creased. Secretarial signature and receipt stamp from Cottrell’s lab near the date. Another receipt stamp on the reverse side. Some wrinkling and rust marks near the top edge. Signed in black ink by Norris: “G. W. Norris”. One-page TLS from George W. Norris to Cottrell, dated August 1, 1925, discussing the outreach of some Australian scientists to him regarding Cottrell’s work. In Very Good condition. On U.S. Senate letterhead, very lightly age toned and faintly creased. Staple puncture in top right corner. Signed in black ink by Norris: “G. W. Norris”. Includes a copy of Cottrell’s unsigned, typed reply. One-page TLS from George W. Norris to Cottrell, dated December 20, 1926, inquiring about the potential involvement of German interests in the operation of the Muscle Shoals plant. In Very Good condition. On U.S. Senate letterhead, lightly age toned and faintly creased. Some small smudges in the bottom margin and along the edges, with some pencil notation in the top right corner. Top left corner bears a small staple puncture. Signed in black ink by Norris: “G. W. Norris”. Also includes a small handwritten note referencing German involvement in the Muscle Shoals plant, writer unknown. Shelved at DuPont Cottrell binder. More

1932. One-page TLS from Italian senator, businessman, and geothermal energy pioneer Piero Ginori Conti to Cottrell, dated April 15th, 1932, on an upcoming meeting between Conti and an associate of Cottrell’s. In Very Good condition. On Senato del Regno letterhead. Faintly creased and light age toned, with some faint smudging. Signed in black ink by Conti: “P. Ginori Conti”. Faint pencil writing beneath signature reads “Prince Ginori Conti”. Shelved at DuPont Cottrell binder. More

1933. One-page TLS from founder of the Citgo Petroleum Corporation Henry L. Doherty to a Mr. Fairchild, dated January 7, 1933, on the subject of inviting Cottrell to stay at the Miami Biltmore Hotel. In Very Good minus condition. On Henry L. Doherty & Company letterhead. Faintly creased, with faint smudging and some scattered, small stains. Dog-ear fold to bottom left corner. Light wrinkling with small closed tears along edges. Signed by Doherty in black ink: ”Henry L. Doherty”. Shelved at DuPont Cottrell binder. More

1922. 1-page TLS from founder of the Eastman Kodak Company, George Eastman, to Cottrell, dated January 11th, 1922, apologizing for being unable to support Cottrell’s “universalization of language campaign”. In Very Good condition. On Eastman Kodak company letterhead, lightly wrinkled and toned along edges, faintly creased. Signed in blue ink by Eastman: “Geo Eastman”. More

1924, 1926. Four-page ALS from the “Edison of France” Georges Claude to Cottrell, dated 25 Sept ‘24, discussing the relevance of Claude’s work in ammonia generation to Cottrell’s research in fixed nitrogen. In Very Good condition. Georges Claude was a French inventor and engineer known for his work in the liquefaction of air, invention of neon lighting, and the Claude process of high-pressure ammonia manufacturing; a collaborator with the Germans in World War II, he was later imprisoned and stripped of his honors. On Claude’s personal letterhead, written on a folded card. Card is lightly age toned, with some mild wear along edges. Written and signed in black ink: “Georges Claude”. 1-page TLS from Georges Claude to Cottrell, dated 21 Mai 1926, discussing the application of Claude’s high-pressure ammonia synthesis process at the Belle, West Virginia ammonia plant. In Very Good minus condition. Letter is lightly age toned, with light pencil writing near the top margin and several faint creases. Moderate scuffing on reverse side, with some small chips and closed tears along edges. Signed in black ink by Claude: “G Claude”. Shelved at DuPont (Cottrell binder). More

Camden: The Haddon Craftsmen, 1939. First printing. 16mo, 15 pages. In Good minus condition. Spine is orange without print. In toned and torn cellophane wrapper. Boards in orange cloth, paper title label on front panel; wear to spine caps. Illustrated: b&w drawings. NOTE: Shelved in Net Desk work area. More

1976. Hors Commerce: 2/20. In Very Good condition. Minor toning across front and rear faces. Scattered foxing or other light staining to back. Very minimal wear to edges. Faint crease to bottom left corner. Signed and dated to lower right in graphite. Inscribed "HC 2/20 for Margaret Lee" in lower left corner. Measures 31.5 in by 43 in. Shelved in Rockville Room B. More

Postcard. Dated "Aug. 24". From John Updike addressed to Susan Black [Sheehan]. Handwritten inscription: "Dear Mrs. Black: Thank you very much indeed for your kind note- I'm glad you liked the story so well, and glad you took the trouble to write me. I've long enjoyed your reviews in the The New Republic and your too few humorous pieces in the NYer. Best wishes," and signed by John Updike. Has light age toning, and mild creasing to edges. Shelved in Room A General Ephemera. More

Postcard. Dated " June 25, 1962". From Andrew Turnbull addressed to Susan Black [Sheehan]. Typed inscription: "Dear Susan Black: Thank you for your appreciative words about my book. As you are a writer yourself, I don't have to tell you how gratifying it is to get that sort of response to one's labors. Sincerely," and signed by Andrew Turnbull. Has light age toning overall. Shelved in Room A General Ephemera. More

London, UK: Victor Gollancz, Ltd, 1989. Second Edition, First Printing. Octavo, xvii, 238 pages. In Very Good condition with a Very Good dust jacket. Spine is yellow with black and red lettering. Dust jacket is protected with a mylar covering, price uncut: "£11.95." Mild general shelf wear with minor soiling to text block bottom edge. One item of ephemera within mylar casing: the business card of Paul M. A. Linebarger. Shelved in LGBTQ. More

American College of Surgeons, 1913. Original 1913 letter of certification to Truman W. Brophy from the American College of Surgeons in Very Good condition inside Good frame. Letter shows toning and yellowing throughout, with foxing or spotting to edges and minor bleeding from red letter inking. Letter signed in ink by John J. Bowman, director; John M. T. Finney, president; Franklin H. Martin, general secretary; and Albert J. Ochsner, treasurer. Frame bears initialls "F.A.C.S." on top, with chipping and moderate shelf wear throughout. Small break with lost frame material to bottom left edge. NOTE: Letter has not been examined outside of frame. More

Philadelphia: The Rosenbach Museum & Library, 1982. Third printing. 64mo, unpaged. In Very Good minus condition. Spine is staple bound. In clear plastic envelope. Cover is blue, illustrated, black print; slight blemish on front panel. Illustrated: b&w and color drawings. “First published on the occasion of an exhibition of original drawings and other materials illustrating the art of Maurice Sendak at the Rosenbach Museum & Library”— colophon. NOTE: Shelved in Net Desk work area. More

Original June 16, 1885 University of Pennsylvania School of Dental Medicine diploma awarded to L. Foster Jack (Louis Ottofy Foster Jack, 1851–1927), conferring the degree of Doctor in Chirurgia Dentaria (Doctor of Dental Surgery). Foster Jack would go on to become one of the most influential figures in American dentistry, serving as a prominent educator, editor, author, and authority on operative dentistry and dental pathology whose writings helped shape the profession during the late nineteenth and early twentieth centuries. The diploma bears the signatures of an extraordinary faculty roster, including Joseph Leidy (1823–1891), the legendary anatomist, paleontologist, and naturalist often regarded as one of the greatest American scientists of the nineteenth century; Thomas G. Wormley (1826–1897), pioneering toxicologist and forensic chemist whose work became foundational in medico-legal science; Harrison Allen (1841–1897), distinguished anatomist and physician; James Truman (1843–1914), influential dental educator and author; and Henry C. Darby, noted professor of operative dentistry and clinical instruction. Beautifully executed in Latin with elaborate engraved calligraphy, the diploma retains its original embossed University seal and blue ribbon and represents the convergence of several of the most important figures in nineteenth-century American medicine, science, and dentistry. Shelved at Rockville Room J (MW shelf). More

Cambridge, Massachusetts: 1998. Color photograph measuring 12" x 8.5", including white borders. In Good minus condition. Photo depicts Nelson Mandela shaking hands with former Provost of Harvard University Harvey V. Fineberg on the day of Mandela's honorary doctorate commencement ceremony. Heavy pen smearing on photo. Creasing in to left corner. Inscribed by Mandela to Fineberg and dated 19-11-98 on backside. Pencil and some pen smearing on backside as well. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 10.25" x 7". In Good minus condition. Photo features Nelson Mandela with former Harvard University Marshal Richard Hunt on the day of Mandela's honorary doctorate commencement ceremony. Paperclip indentation on left side of top edge. Pen smearing on photo. Some scratching on left side. Inscribed by Mandela to Hunt and dated 19-11-98 on backside. Pencil on backside as well. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 11.25" x 8", including white borders. In Good minus condition. Photo features former Harvard University President Neil Rudenstine, Nelson Mandela, Mandela's third wife Graça Machel, and Angelica Zander Rudenstine on the day of Mandela's honorary doctorate ceremony. Heavy smearing to photo. Paperclip indentation on right of top edge. Inscribed "To President and Mrs Rudenstein" and dated 19-11-98 by Mandela on backside. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 8" x 10", including white borders. In Very Good minus condition. Photo depicts Nelson Mandela holding up his honorary doctorate degree from Harvard University on the day of his commencement ceremony. Smearing from pen on photo. Signed and dated 19-11-98 by Mandela on backside. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 10" x 8", including white border. In Very Good minus condition. Photo features Nelson Mandela and former Harvard University President Neil Rudenstine on the day of Mandela's honorary doctorate ceremony. Light pen smearing on photo. Signed and dated 19-11-98 by Mandela on backside. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 8" x 10". In Very Good minus condition. Photo depicts Nelson Mandela laughing alongside opera singer and recitalist Jessye Norman who performed "Amazing Grace" at Mandela's Harvard University honorary doctorate ceremony. Light pen smearing on photo. Signed and dated 19-11-98 by Mandela on backside. Shelved in Case 1 1/2. More

Washington, DC: 1998. Color photograph measuring 10" x 8". In Very Good condition. Photo features Nelson Mandela delivering a speech after being presented with the Congressional Gold Medal on September 23, 1998 by former President Bill Clinton, seen behind. Signed by Mandela on the backside and dated 19-11-98. Shelved in Case 1 1/2. More

Cambridge, Massachusetts: 1998. Color photograph measuring 12" x 8.5". In Good condition. Photo features Nelson Mandela shaking hands with a faculty member on the day of his Harvard University honorary doctorate ceremony. Pen smearing on photo. Signed and dated 19-11-98 by Mandela on backside with smeared pen. Pencil on backside as well. Protected in plastic sleeve. Shelved in Case 1 1/2. More