It is very long, contains surprisingly few of the characteristic Wolfram promotion usually found in Wolfram texts, but besides a detailed biography and pictures of historic documents, there are a few gems (people who researched "algebra of logic" before most others) for the persistent reader.
> And maybe if the operation we now call currying needs a symbol we should be using the “sha” character Ш from the beginning of Schönfinkel’s name to remind us of a person about whom we know so little, but who planted a seed that gave us so much.
That's a good suggestion!
For folks who are interested in combinators but didn't get what they want from the text: the approachable reference on combinators is Hindley and Sheldon's "Lambda-Calculus and Combinators: an introduction"
... and of course, there is "To mock a mockingbird" by Raymond Smullyan, which introduces the topic through puzzles.