Ones I haven's seen mentioned before (checked the other threads)

Bill Bailey
Just Because
Meeting in the Air (Carter Family)
Washington & Lee Swing

we (Well Tempered String Band) use this as a demonstration at workshops-- the Carter Family never (well, hardly ever) used any chords but the I, IV and V even when the music clearly called for it-- thus Meeting in the Air used only those three chords even though other songs use the VI, II, V, I progression. . . and you can sing them together, as we dmonstrate.