This wrapper design style was used exclusively for Encyclopedia of Humor booklets, as is evidenced by the Subseries Declaration at the bottom of the wrapper. No concrete date range has been determined for these wrappers. Certainly they emerged no earlier than 1951, and likely it was somewhat later. It is probable they remained in use until plant operations ceased in 1978 but, again, this is mere speculation. Please check out our Database of Haldeman-Julius Pocket Series and Little Blue Book Titles for a more exhaustive list of titles in The Encyclopedia of Humor subseries.
Click the wrapper image to enlarge. Click the booklet number underneath to view the associated booklet profile.
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