Arthur Welle

@waysidemapping@mastodon.social This is what they claim: "This package is released as free, open-source, and GPL friendly by the Pictogrammers. You may use it for commercial projects, open-source projects, or anything really."

@waysidemapping@mastodon.social https://pictogrammers.com/library/mdi/ could be a good source as well (though it may not be strictly cartography-oriented).