Philately - Air Mail (16)
Philately - Censored Mail (5)
Philately - Earliest/Latest, First/Last & Proving dates or places (16)
Philately - Hotel & related mail (2)
Philately - Military Post Offices or Military Administration (1)
Philately - Multiple Postal Authority/Period mail (6)
Philately - Original Postal Document (3)
Philately - Postal Stationary (1)
Philately - Printed Matter mail (5)
Philately - Significant Addresses/Persons (2)
Philately - significant cachets & postal markings (24)
Philately - Significant franks on covers (1)
Philately - Significant Rates/Periods (2)
Philately - Significant Route (24)
Philately - Small Locales (3)
Philately - Stampless Mail (2)
Philately - Surface Mail (contemporary) (7)
Philately - Suspended Service mail (21)
Philately - Train Stations/Rail Transport & TPOs (1)
Philately - uncatalogued/undocumented varieties (3)
Philately - Unusual Origin, Destination or Postal Link (10)
Philately - unusual postal procedures/fines/taxes (5)
Unique/Discovery Piece (10)