U S Worldwide Stamps Postal History December 19 20 2017 United States 1913 15 Panama Pacific Exposition
www.cherrystoneauctions.com
Panama Pacific Exposition Celebrating Permanent Construction By Building Things Designed To Crumble The Philatelist
the-philatelist.com
1913 United States 5 C Panama Pacific Exposition Used Scott 399 Stamps Postage Stamps Webstore Online Auction
www.webstore.com