Excerpt from the San Jose 1949 City Directory. I came across this record early, but Urban C. proved a challenge. The mystery was cracked in the moment I by chance entered Charles (for the C) Zimmerman in the search database, which returned the boy’s birth record: Charles Ervin, born in 1931, mother’s maiden name: Zimmerman. Source: Polk’s San Jose (California) 1949-50 City Directory, page 724, R. L. Polk & Co., Publishers, San Francisco 1950.