In the comments to this post, Matt the Engineer and Gordon Werner provided great links to our City’s own streetcar maps.
Matt provided this map of the system in 1941. The image was originally uploaded by Andy Filer, who I know.
As EricN pointed out, many of the current single and double digit Metro city bus routes match to streetcars with the same number.
Gordon provided two more images, which are a little easier to read, here below the fold.
Here’s the system in 1933:
These are awesome, thanks for providing the links!