In the August 1970, August 1971 and August 1983 issues of Word Ways, Ernst Theimer introduced the charade crossword to readers. The first two paragraphs below, explaining the nature of this puzzle, are repeated from the 1971 article.
"Another Charade Crossword,"
Word Ways: Vol. 17
, Article 16.
Available at: https://digitalcommons.butler.edu/wordways/vol17/iss2/16