I thoroughly am enjoying this immense collection of classic comic amazement. Like many old fools I read these early issues at the time of their release and through the foolishness of youth I lost many of them through age, mold and the old school parental habit of their throwing out those "childish comic magazines." Big, Huge Mistake! That said, re-enjoying these in digital format is a time trip and an immensely enjoying immersion in what has become an important Art form of the 20th and 21st century. The transfers are not perfect but in the slight grunginess of the scans they capture the essence of the times. While the original art and feel of the books are the best and while I also highly encourage investing in the Marvel Masterwork book series, this collection allows a close-up perusely and examination of this treasure trove of comic book thrills at an amazingly low price. Also, I have noticed in the reviews, a number of statements regarding the MARVEL WATERMARK on the pages as a detriment to the work. I would agree, however, that WATERMARK is only apparent if you look at the PDFs with MAC PREVIEW program or an old ADOBE READER program. Use the enclosed 7.08 version of ADOBE READER or the latest version 9 Adobe Reader (download is free) and there is NO WATERMARK on the screen. As old man Stan would put it, Enuf Said. Excelsior!