Rare Harmony Concert Cow Palace 1968 Creedence, Iron Butterfly Handbill Original

Rare Harmony Concert Cow Palace 1968 Creedence, Iron Butterfly Handbill Original.  The handbill is in near mint condition.  There is a cow palace stamp on the front which is how the handbill originally was printed.  The postcard was used to advertise the upcoming show and was left on the counter of the famed Velvet Underground Clothing Store on Broadway in San Francisco TThe Benefit for Harmony was held at the Cow Palace on July 12. 1968 and featured famous acts such as Iron Butterfly, Creedence Clearwater Revival, Vanilla Fudge and Canned Heat, Little is known about this benefit but by all accounts, it did take place. The original handbill measures approximately 5" x 7½"