Once upon a time, a young man named Lysle C. Ummel1 visited Covina, and while he was here, he bought four picture postcards of the place and sent them back to relatives in Fremont, Nebraska.
Lysle must have mailed them all together in an envelope, because they have no postmarks and thus are not readily datable. However, various clues in the photo of Citrus Avenue made it possible for me to determine that particular picture was taken in 1919.
The familiar view below looking north on Citrus from Badillo. Lysle went on to become an electrical engineer,2 so that perhaps explains his pointing out the precise location of the Edison office at the time.

Click on the image to view an enlargement (and click here to view Lysle's message on the verso).
So how did I figure out the year? Let's start out with that blade sign on the Chapman-Workmen building at left. Turns out that "Winder & Jones" were in business at that location from 1919 to 1926,3 so that narrowed the range of possible dates right away. The Covina Theatre isn't there across the street yet, so that narrows things even further to 1919-1921.4 But the clincher was the license plates, as 1919 was the last year between 1919 and 1921 that California plates were white.5
Here are the other two postcards with white borders, which I feel safe in assuming are also from 1919.





