John Lennon, NYC. 1974.Specifications for all available Prints 6" x 6" Magnum Square print Fuji Crystal Archival Matte paper Signed on verso by Bob Gruen Mint condition About Bob Gruen Bob Gruen is an American author and photographer known for his rock and roll photographs. By the mid 1970s, Gruen was already regarded as one of the foremost photographers in music working with major artist such as John Lennon, Tina Turner, the Rolling Stones, Led Zeppelin, Elton John, and