The Three Degrees' Philly International 45s were as follows:

1973:
Dirty Old Man [[#58 R&B chart)
Year Of Decision [[#74 R&B)
TSOP [[w/MFSB) [[#1 Pop; #1 R&B)

1974:
Love Is The Message [[w/MFSB) [[85 Pop; 42 R&B)
When Will I See You Again [[#2 Pop; #4 R&B)
Get Your Love Back [[Didn't Chart)
I Didn't Know [[18 R&B) * See below

1975:
Take Good Care Of Yourself [[64 R&B)
Long Lost Lover [[Didn't Chart)
Free Love [[UK release)
Toast Of Love [[UK release)

EPIC RECORDS [[but still Philly Soul)
1976:
What I Did For Love [[Didn't Chart)
Standing Up For Love [[Didn't Chart)
We're All Alone [[Didn't Chart)

I've never understood why The Three Degrees' singles were performing so poorly on the Pop charts. Philly Soul was hitting hard and heavy with records like Harold Melvin & The Bluenotes' "If You Don't Know Me By Now", The O'Jays' "Back Stabbers" and "Love Train", Billy Paul's "Me And Mrs. Jones" and "Thanks For Saving My Life", MFSB w/The Three Degrees "TSOP", etc. Why were releases like The Three Degrees' "Year Of Decision", "I Didn't Know", and "Take Good Care Of Yourself" failing so miserably on the charts? To this day, it makes no sense, as those are some of my favorite Philly Soul tracks.

* The Three Degrees "I Didn't Know" as performed A Cappella on "Sanford & Son".

https://youtu.be/8nkalRu-r2s