Pan-American Official Souvenir Mail Cards, group of 6 items, all bearing exposition cancels; cards include Electricity Building (Bomar B01-02C cancel), Temple of Music (B01-08), "The Stadium" to Bay Ridge N.Y. (B01-11), Albright Art Gallery (B01-11), Temple of Music (B01-19), and a Official Souvenir Mail Card envelope postally used (B01-02B), Very Fine overall. Estimate  $600 - 800. $0 (Image)