Valley Times (1946-70) once published in the San Fernando Valley until it went bankrupt.
45,000 of its images are now being digitized and will be available online at the LA Public Library. To search for the images you must go here. Then enter “Valley Times and Van Nuys” in the “Keywords” box. Over 1,700 images will come up. Unfortunately, that is about the best search advice I can give.
The booming Valley back then, seemingly a more wholesome and happier place, also includes many images of Van Nuys, some of which I’ve posted down below.