pa 39 was extended further southward on lr 22006 and a-306, as well as parts of legislative routes 22011 and 22013, in 1961, to a new terminus at u.s. route 322 and u.s. route 422 near hummelstown. at the time, it was routed on hanover street in the vicinity of union deposit. the portion of hanover street south of canal street had previously been part of pa 340 from the 1930s to the early-to-mid-1950s.