Back in the 70's, I bought Henry's little booklet. Used it aand bought several copies for my friends. He then asked me to pre-buy his new book, that he was working on, that promised to be the difinitive book on B&W archival research. A year and a half later, with constant re-promises, he declares bankruptcy. I wasn't so mad about time and money wasted as the fact I would never get to see any of the research. Several years pass. He does finally publish a book. Only he has decided that color is the way to go. Very little B&W information is included. Everyone praises him and he goes on to fame and awards. I have never bought his book nor read his articles nor bought anything he has endorced. There I've finale gotten my $26.00 worth off my chest.