Regarding 71, there used to be a bus service 71 running between
Geylang Lorong 1 Terminal and Old Upper Thomson Terminal.
Geylang Lorong 1 Terminal, (Geylang Road, Kallang Road), Sims
Avenue, Paya Lebar Road, Upper Paya Lebar Road, (Upper Serangoon
Road), Yio Chu Kang Road, (Old Upper Thomson Road) and Old Upper
Thomson Terminal.
And return via Old Upper Thomson Terminal, (Old Upper Thomson
Road), Yio Chu Kang Road, (Upper Serangoon Road), Upper Paya Lebar
Road, Paya Lebar Road, Geylang Road and Geylang Lorong 1
Terminal.
*() denotes Express sector.
* Upper Serangoon Road was probably today's Boundary Road.
This service was replaced with today's bus service 70, which
runs about the same route as former bus service 71 between Paya
Lebar Road and Yio Chu Kang Road (minor difference in Serangoon
area).
Did this old 71 run the Upper Peirce Reservoir segment of Old
Upper Thomson Road? I remember vaguely when I was a kid
riding on old TIBS 160 along Upper Thomson Road that I once saw
what I remember was an SBS bus picking up a group of waiting
passengers at Old Upper Thomson Road(at a bus stop?) near the
northern most entrance of Old Upper Thomson Road heading towards
YCK Road, at the section where Old and the "new" Roads split and
are still visible to each other before Old turns off uphill and
disappears from the main road.
That location would be just right outside the current Seletar
Range site.