The first *100 year milestone* in US route history

[usends]

Another 100 year milestone: on Aug. 3, 1925, the Joint Board on Interstate Highways held their second meeting (and this would turn out to be their last).  Maps showing all routes that had been requested for inclusion in the US highway network were sent to each of the states for review and approval (before submitting the entire proposal to the Dept. of Agriculture).