Letter, H. Whitcomb Nicolson to Mrs. F. W. Wehner, September 21, 1918. The letter notifies the Wehner family that Joseph is missing in action. Two (2) pages; typed transcription included. Note: Page one of this letter is currently on display in the World War I Gallery of the Personal Courage Wing.

Letter, War Department to Mrs. F. W. Wehner, March 5, 1919. Letter from the War Department noting the enclosure of the death certificate for Joseph Wehner. Two (2) pages.

Letter, American Red Cross, National Headquarters to Wehner family, undated. Expresses sympathy and includes two (2) copies of a photograph of Joseph Wehner's grave, taken by the Graves Registration Service.

Letter, W. C. Posten to Albert Wehner, April 5, 1942. Posten writes to Albert Wehner about his brother Joseph (Posten attended Phillips Exeter Academy with Joseph), and about a new book being published which contains a chapter about Joseph Wehner and Frank Luke during World War I. One (1) page; envelope included.