These coordinates will lead you to a plaque and other signage that will contain the needed information to solve the puzzle. And will let you unlock the mystery of Tupper-Where!
Tupper-Where? The Joy of Finding Plastic Containers in Strange Places
by G. O. Cache
Published 2022, Mandel Brothers Press.
Call number: 4th floor Nonfiction (ABC.DEF cache)
A = What is this type of place called? Count the letters.
B = The last number in the year we opened this location.
C = Our street numbers added together.
Our phone number is (D61) E68-F700
Congrats to Pefgy for FTF!