<https://www.classicposters.com/poster/5-1/#webpage>
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"Like all of the early BG series, the BG-5 poster is quite scarce in high grade. This very pleasing Wes Wilson design features his distinctive lettering surrounding a circle. Jefferson Airplane and The Jaywalkers played this May 1966 event. The original poster was printed on vellum and measures approximately 14″ x 20″. The Union logo #72 appears in the lower right corner. The second print poster was printed on uncoated index stock and measures approximately 13″ x 20″. The original handbill was printed on thin white paper in black ink and measures approximately 5″ x 8″. The postcard was printed on white card stock and measures approximately 5″ x 8″.  "
<https://www.classicposters.com/poster/5-1/?add_to_wishlist=21398>