Read it however you wish but that one dates all the way back Mar. 3, 1925, which clearly establishes it as part of the “reciprocity” agreement with MARYLAND ~ a quite historic piece of mishmash worth reading about for its entertainment value.
The most recent revision was March 14, 2007, as you can see, so I’d have to wonder if you understand what a legislative history footnote means if you’re actually suggesting that a law is irrelevant because the first version of its section was drafted 85 years ago.
On closer reading it looks like he had 180 days [under (b)(2)], not 30.