Two classic west coast concert posters: a color 14 x 20.5 second printing of the poster for Big Brother & The Holding Company, Oxford Circle, and Lee Michaels at the Avalon Ballroom on December 9-10, 1966, designed by Victor Moscoso (catalog no. FD-38-3); and a color 14 x 21.25 first printing poster for the Youngbloods, Lee Michaels, Taj Mahal, and others for a New Year's Eve show at the Olympic Auditorium on December 31, 1969. The top of the poster reads "Wolfgang Grajonica presents in Los Angeles," using Bill Graham's given name (catalog no. BG-100A). In very good to fine condition, with tack holes to the corners of the New Year's Eve poster, and light creasing to the edges of both.