Fritz has summed it all up as to what the drawbacks are to getting the A. A. KNAPP book. Here is his informative e mail to me and since I can't say as well as he did, I am sending it to you. I have found the book to be full of errors, but in the long run it gives me names that I can attempt to track down that I would not have known otherwise. thanks Fritz-you are the greatest. Shirley Hi Shirley: (e mail from Fritz) Might want to advise people about what they are getting for their money. Remember all the errors and bad lines it contains. Still a worthwhile puchase. Saves oodles of research time!!! Also they should be advised that here is also a 100+ page, 1956 Supplement to the NKG, which is hard to find. Not many copies in existance anymore. Changes, corrects, deletes and adds data which came to light after the 1953 NKG publication. I have an additional unpublished 600+ pages in 2 Volumes [typewritten], plus a third volume [handwritten] that I hope to get typed up one of these days. Just about have enough Additions/Deletions and General corrections to replace the original 1953 NKG. Been working on this for over 30 years and still finding stuff to cahnge everyday. Just thought I'd mention it. Have a good one, Fritz