#24 (June 1991), 60–62. Holland, Steve. The Mushroom Jungle. Zeon Books: Dilton Marsh, England, 1993. Lesser, Thomas M. "The Boardman Hardcovers," Paperback Parade #38 (April 1994), 21–44. External links Book publishing companies of the United Kingdom Magazine publishing companies of the United Kingdom Comic book publishing companies of the United Kingdom 1930s establishments in the United Kingdom Publishing companies established in the 1930s 1967 disestablishments in England Publishing companies disestablished in 1967 British companies disestablished in 1967