A photo from the Palmer Conner collection at the Huntington Digital Library, depicting an "East Los Angeles, old Victorian in decay."
HDL
Not much info to go on for location, but I think I accidentally stumbled upon it while driving around in the Google mobile:
GSV
It's the southeast corner of Avenue 21 & Vallejo Street in Lincoln Heights. Though the main house in the photo is long gone, compare the house at far left in the Palmer Conner shot with the green house in the Google street view. Looks to be the same house, just with a more John-Deereish paint job.
And, sorry I couldn't screen shot the GSV from closer to where the original photo was taken - that tree in the middle of my screen shot obscures the house from that angle.