Goofs

It seems that no one smokes cigarettes in 1950s LA.

The Rowing Erg Machine wasn't invented until 1981 and thus would never have been spoken of in the 1950s.

Correction: The first known use of erg was in 1873. Calvin built his own machine, and erg was used in reference to it- they weren't speaking of a manufactured model that contained "erg" in the name. It's quite possible that they were using the term erg in a general context.

In multiple episodes, the second hand on analog clocks moves with the tick, tick, tick motion of a quartz clock movement. Quartz clock movements were not commercially available until the mid-to-late 1960s. Clocks of this era, the 1950s, should have a sweep second hand.