Motorcycles
 Capt. Bernard J. Hoppe of the Boston Traffic squad. He made Captain on Thanksgiving, 1920 by Commissioner Curtis |
 Motorcycle cops with their vehicles |
 Motorcycle cops, Boston Common |
 Motorcycles and sidecars on Beacon Street, Boston Police Parade |
 Mexican cossacks here in Boston - the girl getting off the cycle is Miss Jerry Lach of North Cambridge |
 President Coolidge's father |
