http://landlordsgame.info/rules/lg-1904p_patent.html
However:
> Borrowing: A player may borrow from the “Bank" in amounts of one hundred dollars, and for every one hundred dollars borrowed the " Bank" takes a mortgage on one or more of the borrower's lots, the total value of which must be at least ten dollars more than is borrowed. For every one hundred dollars borrowed from the "Bank" a bank mortgage is placed upon the property on which the loan is made, and the player puts his note in the "Bank," paying upon each note five dollars (interest) every time he receives his wages. One player may borrow from another, giving a mortgage on any property he may own and making the best bargain he can as to interest, terms of payments &c. The player loaning the money places his individual, mortgage on the top of the borrower's deed to show that he has a mortgage on that property, Should a loan be repaid before passing the beginning-point, the borrower saves the interest.
But there are a few variations... This one looks closer to "modern" monopoly - I can't seem to locate the "two rulesets" referenced by Wikipedia though (one "pro" one "contra" monopoly - in the second everyone supposedly benefits from created value).
http://landlordsgame.info/games/lg-1906/lg-1906_egc-rules.ht...
https://en.m.wikipedia.org/wiki/Monopoly_(game)
> Magie created two sets of rules: an anti-monopolist set in which all were rewarded when wealth was created, and a monopolist set in which the goal was to create monopolies and crush opponents.
See also: https://www.theguardian.com/lifeandstyle/2015/apr/11/secret-...
[edit: here are the combined rules with rules for "prosperity" https://landlordsgame.info/games/lgp-1932/lgp-1932_rules.htm... ]