Some images of the ledger, seeing as the article doesn't contain any for some reason: https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_81/December

Some images of the ledger, seeing as the article doesn't contain any for some reason: https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_81/December_1912/The_Evolution_of_the_Dollar_Mark#/media/File:PSM_V81_D534_The_modern_dollar_mark_in_the_making.png https://en.wikisource.org/wiki/Popular_Science_Monthly/Volum... https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_81/December_1912/The_Evolution_of_the_Dollar_Mark https://en.wikisource.org/wiki/Popular_Science_Monthly/Volum...