Here are 4 collections of mostly science fiction literature spanning from 2100 bc to the 60s.

They are massive but they do not have everything produced in that era. The books have been cataloged and tagged by the curator in Calibre which you should use to view the collection. Reading the best works in chronological order gives you a great view of how the earlier ideas influenced the later works. The decade also changes the style which is easily seen in the 1960s era.

1930s 67.5 gb
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1940s 67.8
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1950s 100.3 gb (those scanned magazines man)
magnet:?xt=urn:btih:3d59579861ad3db2d1227d9a55f933d1c79fa36b&dn=CALIBRE%20SFF%201950s&tr=udp%3a%2f%2fopen.demonii.com%3a1337&tr=udp%3a%2f%2ftracker.publicbt.com%2fannounce

1960s 36.1 gb
magnet:?xt=urn:btih:c7dc3716514dadb9b6d95518956c57d1a603f1e0&dn=CALIBRE%20SFF%201960s&tr=udp%3a%2f%2fopen.demonii.com%3a1337&tr=udp%3a%2f%2ftracker.publicbt.com%2fannounce