Here's a neat peek of K and 10th Streets in downtown Sacramento back in the day. Note various features, such as the Crest Theatre, which I've posted about before here. Also in view are: Roos Bros., Joseph Magnin, Leed's, Green-Hayden Co., Hale's, Hotel Sequoia, Hart's, and others.
Then came the shopping malls. The prevalence of suburban shopping malls slowly took its toll on K Street. See for example, this 1957 public domain PR short, "Shopping Can Be Fun: A New Concept in Merchandising", which chronicles the Hillsdale Shopping Center in San Mateo, California.
What the future now holds for K Street is anyone's guess, though we hope it's a bright one. In the meantime, we can remember its past.