Three aluminum road and one mountain bike and all believed to be for 650c wheels, 68mm bottom bracket width, and threaded headsets, with probable frame 'sizes' shown.
1 Solo road model with 1" headset (large)
1 Contour mountain model with 1-1/8" headset (medium)
1 Ironman triathlon road model with 1" headset (medium)
1 unknown road model with 1" headset (small)
All frames stripped. Yellow frame has been repaired.