When Columbo purchases Galesko's book, then takes it to show him, he states "There are 522 photographs in this book." I don't think that's possible given the size of the book that Columbo is carrying, not to mention that we get a glimpse of at least one of the pictures and it fills almost an entire page....
Maybe Galesko took individual photographs of all the prisoners and printed them in the book on only a few pages, just like a high school yearbook. Then there could be lots of great big photos on lots of pages, and lots of tiny photos on a few pages.
That would have been a good joke... Columbo flips through the book looking at pictures of cons, and they're all photos of Robert Culp, Jack Cassidy, etc.