Tropermic Calculus is a book by CFR about using the cube & it's projection in 2 dimensions as a frame to do transformations, and abstract algebraic calculations. The table of contents is below. The book was published in April of 1944.  I find that his unique Plus One Algorithm & it's reverse extremely interesting in the area of the number theory of permutations. (It has recently been translated into a java program).
The frame working design is part of the contents of a Tai Shu book G-W published privately to a circle of his friends.

Our Friend Breck has made a wonderful study based on this book of the tablock with pictures (in color) and animation here .