So took a look at this, thinking about a booster shot. I’m not sure which kind of vaccine I got in the early/mid 1960’s. Maybe a local minute clinic has it.

http://www.webmd.com/vaccines/adult-mmr-vaccine-guidelines?page=2

The CDC says adults at greater risk of measles or mumps should get two doses of MMR vaccine, the second one 4 weeks after the first. This includes adults who:

Have been exposed to measles or mumps or live in an area where an outbreak has happened
Are students in colleges or trade schools
Travel internationally
Work in health care
For measles, the CDC advises a second dose for adults who:

Were previously given a vaccine made with “killed” measles (instead of the live-type of vaccine used today)
Were given an MMR vaccine between 1963 and 1967, but there’s no record of what type.