The "Medic Alert" ID tag is showcased in this episode, in the scene with the lady who is an epileptic. The use of these special IDs & how they can be helpful is excellently done.
Melissa Gilbert plays an uncredited role here, as "Jenny". She is clearly identified by face; she also gives DeSoto a hug during a Squad 51 call. She played one more role on another show before being cast as Laura Ingalls on "Little House on the Prairie".
The vehicle Mrs Caldwell is driving in the opening scene when she almost hits the boy on the bicycle is a new model year 1973 Chevrolet Chevelle.