Some images of the ledger, seeing as the article doesn't contain any for some reason:<p><a href="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" rel="nofollow">https://en.wikisource.org/wiki/Popular_Science_Monthly/Volum...</a><p><a href="https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_81/December_1912/The_Evolution_of_the_Dollar_Mark" rel="nofollow">https://en.wikisource.org/wiki/Popular_Science_Monthly/Volum...</a>
Some more HN discussion about this - Why Is the Dollar Sign a Letter S?<p><a href="https://news.ycombinator.com/item?id=9017986" rel="nofollow">https://news.ycombinator.com/item?id=9017986</a>
An alternative, more sympathetic take on Pollock's story: <a href="http://www.clanpollock.com/index.php?content=oliverpollockunsunghero" rel="nofollow">http://www.clanpollock.com/index.php?content=oliverpollockun...</a>