![]() Originally there was an issue per week, then in November 1921 came a transition to an issue per month. ![]() ![]() It can be quite a laborious, hit and miss process to navigate back through all those issues, particularly for the earlier years (prior to November 1921) where there are about fifty issues per year. ![]() Subscribers to Scientific American are given access to every issue, in PDF format, right back to the magazine's launch in 1845. For subscribers to Scientific American, see How to navigate quickly through Scientific American archives or read below.
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