This is an early CFR manual on logic. It harnesses the power of the syllogism to extract from statements their logical components & truth values. The table of contents is below.
It is complete, concise, compact & a great introduction to formal logical thinking - all in 24 pages. The symbology is ultimately extended to a logical cube so that one may hold a logical object with many alchemical attributes in his mind for logical meditation. My favorite quote at the beginning of the book is Demonstration from section VII. See Book Chameleon 1st or 2nd edition for more on the cube & it's relationship to the Yi King (I Ching), the Tree of Life, Tarot & many other things. This manual was published in April of 1944.