Ad Vanooijen – Israeli postage stamps בולי דואר ישראליים
The Osborn Collection - United States - Europe - South America
Stamps auction catalogue: rarities of the World 2013 by David Feldman - Issuu
Rare & Secondhand Books, Rare & Used Textbooks, Rare & Out of
Otte Wallish – Israeli postage stamps בולי דואר ישראליים
Philatelic Books, Foreign Countries, G-U
penny black Auctions Prices
County Philatelic Auctions Stamp Sales - Buy-it-Now List 280
British Empire & Great Britain by David Feldman - Issuu
Single 1958 3 Cents US Postage Stamp, S# 1107
David Wrigley - Postal history
County Philatelic Auctions Stamps for Sale: Clearance Sale
Philatelic bookshop - VACCARI
948 - 1947 5c and 10c CIPEX souvenir sheet - Mystic Stamp Company