I live in Washington DC and recently have been working on a project involving the Wardman Park Hotel.In my early research I noted that the City Museum here in Washington (which houses the D.C. Historical Society) holds the Harry & Lillian Wardman papers (1916 - 1930).The papers are identified as #MS 382.The City Museum can be reached as follows:
City Museum of Washington, D.C. 801 K Street, N.W. Washington, D.C.20001 202-383-1800
Go to the following website to see an online list of the Wardman material held by the museum.Photographs are included:
It would be advisable to make haste.It has been reported that the museum is having financial trouble.The research collection will remain but I am not sure how much staff help will be available if the public part of the museum closes.