We discussed United States Passport Applications in an earlier post. There is an article on the National Archives website about these applications, which are available on microfilm--unindexed.
These records are also:
- available at Ancestry.com as US Passport Applications and images 1795-1925--fee based--indexed.
- available at Fold3.com as Passport Applications, 1795-1905--fee based--indexed.
The microfilm is available through the Family History Library and may be in the collection of other large genealogical libraries.