Avalon Ballroom 8/2-4/68
The original poster was printed on uncoated index stock and measures approximately 14″ x 21″. Two different paper stocks were used, one is .0075″ thick and the other is .095″ thick.
The postcard comes in four types:
The Type A card has a “place stamp here” reverse and measures approximately 4″ x 6″.
The Type B card has a blank back and measures approximately 4″ x 6″.
The Type C card is a double card of FD-131 and 132. This card has a bulk rate permit and measures approximately 6″ x 9″.
The Type D card is the same as the Type C and was mechanically addressed and mailed to people on the Family Dog mailing list.