For example, you've written a FoxPro book. Or several (I don't know). Great. Release it/them for free download.

You're right, you don't know.

She and Ted Roche (and maybe others, I can't recall) wrote the Hacker's Guide to Fox back around 1995/1996. She and Della Martin wrote a book on VFP Office Automation a few years after that. And Tamar wrote at least one "What's new in Fox version (N)" and I vaguely recall she wrote a book on SQL in VFP. There are probably others that I'm missing, but those are the ones I own.

All three were published by a book publisher (Tamar can correct me, but I believe all were Hentzenwerke). They invested time to produce and edit the book, and there are intellectual property rights. Believe me, the profit margin on books is razor thin.

If you've got a beef, go to the publisher. They still have contracts with online retail channels like Amazon and I would imagine the books are still available on Hentzenwerke's site. I think most of her books are available in digital form for about $29 (last time I looked at the Hentzenwerke site). If they want to release it for free, that's their decision to make. And if they decide to continue to sell for a price, that's also their right.

I wrote a book in 2006 and contributed to another in 2008. I'd potentially face stiff penalties if I decided on my own to release the full text for download on my own.