Roalex Co., Forest Hills, NJ, circa 1950's and 1960's.
(card is 4.4 by 5.75 inches, puzzle is plastic 2.5 inches by 1/4 inch thick;
the spacing of the copyright information at the bottom varies on
discusses this puzzle and gives the solution
shown in the photo above as well as a number of other sentences like
"YAMS GROW BUT HIDE"
and phrases like
"DEAR BOYS WITH GUM"
(M. Keith ,
"Vintage Plastic Sliding-Letter Puzzles"
M. Keith ,
"More Sliding-Letter Puzzles").
C. Bates has also found the sentence "I SAW THEM BURY GOD".