1. Charles J. Heidelberger (Michael's brother) and Michael Heidelberger Date: [ca. 1905] Genre: Photographic printsPortraits
2. Michael Heidelberger's high school graduation photo Date: 1905 Genre: Photographic printsPortraits
4. Excerpt from Michael Heidelberger's scrapbook during his postdoctoral stay in Europe Creator: Heidelberger, Michael Date: 1911 Genre: DiariesExcerpts
6. Menu from Michael Heidelberger's good-bye dinner after his postdoctoral stay in Europe Date: [1912] Genre: Ephemera (general)
7. Letter from Richard Willstatter, Eidgenossische Technische Hochschule to Michael Heidelberger Creator: Willstatter, RichardEidgenössische technische Hochschule Zürich Date: 4 August 1912 Genre: Letters (correspondence)
9. Certificate of completion of military training camp at Plattsburgh, NY Creator: United States. Army Date: 6 August 1915 Genre: Certificates
11. Wedding March [Sheet music] Creator: Heidelberger, Michael Date: 29 June 1916 Genre: Ephemera (general)Drawings (visual works)
12. Michael Heidelberger with his first wife, Nina Tachau Heidelberger, and his mother-in-law Fanny Tachau on his wedding day Date: 29 June 1916 Genre: Photographic prints
13. Excerpt from Michael Heidelberger's laboratory notebook Creator: Heidelberger, Michael Date: [October 1916 - June 1917] Genre: Laboratory notebooksExcerpts
14. Letter from United States Army, Office of the Surgeon General to Michael Heidelberger Creator: United States. Department of the Army. Office of the Surgeon General Date: 3 January 1918 Genre: Letters (correspondence)
15. Estimated Number of Cases of Syphilis Among Adults Creator: Committee for Civilian Co-operation in Combating Venereal Diseases. Council of National Defense Date: [April 1918] Genre: Fliers (printed matter)
16. List of Approved Pamphlets, Exhibits, etc. for Social Hygiene Education Creator: United States. Department of the Army. Office of the Surgeon General Date: [April 1918] Genre: Lists (document genres)
17. Memorandum from Michael Heidelberger to the United States Army, Office of the Surgeon General Creator: Heidelberger, Michael Date: 30 April 1918 Genre: Memorandums
18. Chemotherapy of Trypanosome and Spirochete Infections: Chemical Series. I. N-Phenylglycineamide-p-Arsonic Acid Creator: Heidelberger, MichaelJacobs, Walter A. Date: October 1919 Publisher: Rockefeller Institute for Medical Research Genre: Articles
20. Letter from Louise Pearce to Michael Heidelberger Creator: Pearce, Louise Date: 17 July 1920 Genre: Letters (correspondence)