The volume "Together We Sing, Wolfe and Fullerton, Follett, All grades edition, 1950-1952, posted above, also was issued as "Enlarged Edition," same pub. dates.
There is a Teacher's Guide for Together We Sing (not seen).

I wonder if anyone still has the Follett Record albums? Album 22, "American Folk Songs," five records, 32 songs, would be interesting. Who did the singing?