Per Steve Vaught at Paradise Leased
, the original caption reads "A Study in Diagonals - A novel and almost cubistic study of the west portal of the Third Street tunnel by Will Connell."
At first I thought it was a gouache, but it seems that Will Connell was a photographer.
A commenter on the site on which I found this thought it might be a recent shot, perhaps a gag, what with the clarity of the image and the cheeky "Swell Photographer" slogan. There was, at any rate, a Will Connell, photographer, at 3008 W. 7th:
Union Station by Connell:
And this curiosity:
Clicking on the credit reveals something tantalizing, though unfortunately
non-functional, at least on my computer. (I couldn't find a "California
Bourbon Co." in city directories.)
Google Street View
Will Connell's studio at 3008 W 7th today... can't help but want to see a
resemblance, in window details, at least, of the "California Bourbon Co."
facade to it...where there's still a liquor store.
Bio of Will Connell: