http://members.iphouse.com/frech001/Al's Flying Eagle and Indian Head Cent Complete Design Set.pdf I've been collecting for over 60 years. I researched and read everything I could find. I joined the FLYING EAGLE AND INDIAN CENT COLLECTORS SOCIETY www.fly-inclub.org. I purchased all 30 years of their club journal, “Longacre's Ledger”. I scanned them all to pdf so I could search them and gave the digital files to the club for posting on their website. I bought all the books I could find on these coins Including Richard Snow's “Attribution Guide”, to identify all the deliberate changes by the mint. I wasn't interested in collecting mistakes, which most varieties are, but rather changes the mint intended and released into circulation. Thus I wasn't interested in the 1856, Flying Eagle, which was essentially a pattern. And, I wanted circulated coins that were actually in people's pockets, part of our history, partly because they are more affordable and because my father started the collection with circulated coins. My research corresponds with Richard Snow's suggested deliberate mint design changes (cited in the file I linked to). I'd like to hear other's thoughts. The photos are of an 1857 FE with the obverse of an 1856, an example of a mint design not in albums.