Oh totally! I'd say if you're into transit history it's well worth having both. They're great compliments because they both set out to do different things. Ride is a more generalized history, while Electric is a more specialized history. Both books are excellent works as standalones, but together they create a really comprehensive picture of the system's history and development.
For instance, Electric has a whole chapter explaining the rational, from both E.R.R. higher-ups and City councilmembers, about the introduction of the trolleybus system — something Ride covers in far less detail. On the other hand, Electric doesn't really detail the City's decision to introduce diesel buses in 1932 — Ride does. Ride, as a history of the Transit System as an organization, doesn't spend much time detailing the independently owned, funded, and operated Edmonton Interurban Railway — Electric spends a chapter on it (despite them being diesel vehicles).
It's that kind of back-and-forth that makes for something really special between the two. I will say though, Ride does have a leg up on Electric just by virtue of being published in 2008. It's a whole twenty-five years newer than Electric and has the benefit of being able to talk about the changes and developments that have happened since 1983.
