I've no idea what era they are as there's no year written on them that I can see.
Here's what's on the first two I took out of the box.
Louise / Today's a Sunny Day for Me - The Three Virginians, on the Piccadilly label.
Ginger - Louisiana Symphony Orchestra. Down in Jungle-Town - Orchestra...
I can't find the recent thread on this subject.
I'm having a clear out and have about 25 to get rid of. Free to good home. Can deliver locally in Brighton and Hove, also for free!