End of historic US highway 106

Note: since I don't have access to a comprehensive collection of historical road atlases, much of the info below is based on the research of Robert Droz; click here to view his site. Photo credits: Dave Brunot; Doug Kerr

US 106 was an original 1926 route; it was decommissioned in 1973. The west end was on today's PA hwy. 706 at US 6 in Wyalusing PA:

Brunot

Old US 106 is now designated as PA hwy. 706; its terminus at US 6 is at the same location as the historic western terminus of US 106.

It's kind of hard to pinpoint he east end of US 106: was it at the the PA/NY state line? Or did it extend to downtown Narrowsburg? Or did it extend slightly east of Narrowsburg to the junction with NY hwy. 97? For what it's worth, I have a 1959 Gousha road atlas, drawn at a level of detail and accuracy that puts today's atlases to shame. It explicitly shows US 106 crossing the Delaware and ending in downtown Narrowsburg (but not extending to NY 97). Hard to say whether that's accurate - but if it is, then the photo below shows that location:

Kerr, June 2001

This is heading east on NY hwy. 52 in Narrowsburg. Just behind the camera, at the PA/NY state line (which is formed by the channel of the Delaware River), PA hwy. 652 (old US 106) becomes NY hwy. 52. Upon landing on the NY shore, you're in downtown Narrowsburg, and there's a fork in the road: to the right is Main Street, while NY 52 is routed left towards NY 97. My atlas seems to indicate that this is where US 106 ended. If you have more info, please let me know!