This list includes some obvious classics but also some interesting fringe selections. According to Goodreads: "To qualify for this list each book/edition must have fewer than 100 pages, according to Goodreads data. My intention is for us to vote on the widespread influence of the books, not whether we liked them."
If you enjoyed this challenge, you could also enjoy Korrick's challenge at the link.
I have eliminated suspect entries with <200 ratings. Books from 132 onwards, although often by famous authors and with quite high Goodreads ratings (1000+), had only 1 vote each.
Update. The works at 137 & 139 are likely self-promoted and suspect.