Geesh! The San Diego Electric Railway modified it's routes often!
Here is how it appeared in 1926 according to the April 1943 issue of the Railroad Boosters Wheel Clicks publication.
I'm posting it here for posterity considering the rarity and delicacy of this issue. Click to make huge:
My latest effort is fabricating destination dash signs for my San Diego streetcars. So I'm collecting material about the various routes. I'll keep you posted.
Yes sir! Destination Dash Signs!
Dandy