The following article is my abridgement of one written as a National Puzzlers' League memorial to Palmer Peterson, who died in June 1979 at the age of 77. Few present-day word buffs are aware of the enormous work that went into the construction of giant forms in the late 1800s and early 1900s. One of the precursors of the crossword puzzle, forms are mini-crosswords of regular shape with no black squares.
Cohen, Philip M.
"Palmer Peterson, Master Formist,"
Word Ways: Vol. 13
, Article 2.
Available at: https://digitalcommons.butler.edu/wordways/vol13/iss1/2