Letter about price increase, avg. sales previous year is 485,000.
Letterer credit by Martin O'Hearn and Joe Desris.
Writer credit by Martin O'Hearn from http://martinohearn.blogspot.com/
Writer credit by Martin O'Hearn
in Batman (DC, 1940 series) #254 (January-February 1974)
in Lynvingen (Williams Forlag, 1969 series) #10/1974 ([oktober] 1974)
in Läderlappen (Williams Förlags AB, 1969 series) #11/1974 (1974-11-dd)
in DC's Greatest Imaginary Stories (DC, 2005 series) #2 ([May] 2010)
in Superman Presents Wonder Comic Monthly (K. G. Murray, 1965 ? series) #117One of Alfred's imaginary stories. Writer credit by Martin O'Hearn.
485,000 average sales