For this first official update I’ve added issues that fall in the timeframe between Amazing Spider-Man 51 and Marvel Team-Up 4. The chronology notes are still pretty lightweight at this point as the bulk of the issues are Amazing. The introduction of Marvel Team-Up in 1972 is the first time that Spider-Man is appearing in more than one title a month. It adds some complexity, but the two titles are actually pretty tightly knit editorially, and the two series weave together nicely.
There are some spoilers if you’ve missed out on the last 50 years of Spider-Man and are just getting started.