Evelyn Bryan's initialed, hand-drawn silver anniversary logo cachet, with Southern Oregon Philatelic Society in silver along left edge.  Franked with one of the four 13c butterfly stamps of 1977 (Scott 1712-1715) tied to cover with a Medford post office Pear Blossom  cancel.  Inserted in each cover is a vintage printed Pear Blossom historical essay on half an 8 1/2" x 11" yellow sheet.