Early versions of the lettercol tended to be simple fan letters, often from young readers. These letters tended to be praise for the previous issue's story and artwork; or simplistic questions about the correct pronunciation of "Mxyzptlk" or where Superman put his Clark Kent clothes when he was in costume;Engblom, Mark. "Dear Editor: Metropolis Mailbag...After Dark!" Comic Coverage (September 17, 2007). Accessed November 24, 2008. or alternately, obsessive dissections of perceived continuity errors or art mistakes.Carlson, K.C. "KC: LOC," Westfield Comics (September 2008). Accessed November 24, 2008: ". . . Mort Wieisinger's lettercolumns for the Superman titles . . . were big lists of 'goofs' that popped up in the books, that encouraged the worst kind of fan behavior (and indirectly inspired Stan [Lee] to create the No-Prize!)."
