If you have a census you would like to add contact the webmaster to get it posted here.
- Census of Covers with the Cushing “Express” Label (v1.2)
- Census of Edey “Express” Covers (v1.0)
- Census of Pioneer Express Covers (v1.0)
- Census of Letters and Envelopes of the Dead Letter Office (v1.0)
- Census of the Official Envelopes of the Finance Bureau (v1.1)