This is the inset map for Hannibal from the 1959 official state highway map. The numbered routes shown on this map were US 36, US 61, and Business Route 61; and Missouri 168 (in dark blue).

A new route for US 36 was either complete (the segment shown as divided highway) or under construction (west of US 61). Thus there is probably also a Business Route 36 running along Broadway, though it's not labeled as such on this inset.

Unlike the 1958 inset map, the map for 1959 did not show US 24 west of Hannibal.