| CHS Records | 1940 | ||||
| CHS Records | v.40-41 | Clark, Allen C. | Robert Mills, Architect and Engineer | p. 1-32 | |
| CHS Records | v.40-41 | Richardson, Willam E. | The Quaker meeting house on "I" Street and its historical background | p. 33-52 | |
| CHS Records | v.40-41 | Bryan, Wilhelmus B. | Dreamers as capital city builders (Brief sketches of Law, Blodget, and Thornton) | p. 53-62 | |
| CHS Records | v.40-41 | Capper, Arthur, Senator | Washington City and the rights of its people | p. 63-78 | |
| CHS Records | v.40-41 | Clark, Allen C. | Beau Hickman (Robert S. Hickman) | p. 79-96 | |
| CHS Records | v.40-41 | East, Sherrod E | The banishment of Captain Meigs | p. 97-144 | |
| CHS Records | v.40-41 | Clark, Allen C. | Wilhelmus Bogart Bryan | p. 145-148 | |
| CHS Records | v.40-41 | Wilmer, Richard H. | William Hollard Wilmer | p. 149-166 | |
| CHS Records | v.40-41 | Clark, Allen C. | Daily National Intelligencer (Extracts from) [Newspaper] | p. 167-172 | |
| CHS Records | v.40-41 | Clark, Allen C. | Washington-Lincoln | p. 173-178 | |
| CHS Records | v.40-41 | Spratt, Zack | The cradle of industry | p. 179-184 | |
| CHS Records | v.40-41 | Lee, Ronald F. | Chesapeake and Ohio Canal | p. 185-196 | |
| CHS Records | v.40-41 | Noyes, Newbold | Crosby Stuart Noyes: his life and times | p. 197-225 | |
| CHS Records | v.40-41 | Harmon, A.C. | Map of Annapolis-Alexandria Road | p. 226-228 | |
| CHS Records | v.40-41 | Appendix | Officers and Mangers of the Columbia Historical Society | p. 229 | |
| CHS Records | v.40-41 | Appendix | Committees | p. 230 | |
| CHS Records | v.40-41 | Appendix | List of members | p. 231-243 | |
| CHS Records | v.40-41 | Appendix | Necrology, 1938, 1939 | p. 244 | |
| CHS Records | v.40-41 | Appendix | List of Communications | p. 245 | |
| CHS Records | v.40-41 | Appendix | Treasurer's reports 1938, 1939 | p. 246 | |
| CHS Records | v.40-41 | Appendix | Annual report of the Secretary | p. 249 | |
| CHS Records | v.40-41 | Appendix | Chronicler's reports, 1936, 1937 | p. 254 | |
| CHS Records | v.40-41 | Appendix | Index | p. 268 |