Police windshield search pictures

While trying to locate a supplier for the windshield last night, I found several neat period pictures of other police departments with Lambretta and Vespa scooters with the same windshield. Apparently the windshield attached at the mirror mounts with two bars that went straight up for the windshield to attach to. The gray vinyl cover below the frame acted as a wind deflector and was cut out around the headlight. See the neat pictures. The one that has all of the DC scooter police parked was taken in 1973 during the Nixon campaign in Washington,DC. The first one pictured is one I found quite by accident but it is a USPP officer on a Vespa Rally 180 at the Washington Monument?