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Does "it has escaped my attention up to the present writing" mean "I've written down my observation into this book(writing)"?

Context: Wouldn’t you suppose that every college in the land would conduct courses to develop the highest-priced ability under the sun? But if there is just one practical, common-sense course of that kind given for adults in even one college in the land, it has escaped my attention up to the present writing.
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It means that he's still unaware of any college giving such courses. (=even if there is such a college, he doesn't know about it)
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NL888[it has escaped my attention] [up to the present writing].
[ I have not learned about it ] [ yet ].

CJ