Robert Genn printed my response to his November 24 letter, Projectors and Such (scroll down), on The Painter's Keys website. Thank you Robert, and continued thanks for being a best friend to artists worldwide!
By the way the Robert Genn Twice-Weekly Letters book is available for order. 960 pages, ten years of over a thousand unabridged letters including an 82 page index. Can't wait to get that!