At the beginning of 1969, Led Zeppelin had no albums and had played together for a mere three months. By the end of the year, they had released two albums, both of which stormed the top 10, with Led Zeppelin II topping the American charts for seven weeks. It all began for the band with a three-night gig in January, 1969, opening for Country Joe & the Fish at the Fillmore West.
Both variants of the pre-concert printed postcard measure 4 11/16" x 7".
The 1st printing A has a Place Stamp Here box on the reverse side.
The 1st printing B has a Bulk Rate mark on the reverse side.
There were also some pre-concert double-sized mailers printed that were conjoined with the BG154 image. They measure 7 1/16" x 9 1/4".