Well, this isn't really a museum, but these two wigwags are on
display at the front of the Sacramento
Light Rail maintenance facility on Academy Way in Sacramento. I do
not know if they ever operate them.
Both wigwag sport a set of rare cast iron crossbucks. They also have
a double bladed Style B semaphores.
The second wigwag is a little harder to find, it's located around the
back of the facility,
but can be viewed from the street.