David Lord Limited
I have only one puzzle by this company but as it is #59 then I suspect there are others to find. The puzzle I have is 14"x19" and approximately 500 pieces. There is a label on both sides saying "The Ideal Puzzle" leading me to believe that this may be what they called the series. No date on puzzle but Ms. Williams noted that this company produced puzzles in the period 1946-1975 and this puzzle would easily fall in that time period. Puzzle is non-metric, non-bilingual, non-postal code.