So you're thinking John/Johnny went to Long Beach c. 1956 or so?
You might be able to find him or his father in a city directory. I found free Long Beach directories online -- til 1969 at this library site:http://encore.lbpl.org/iii/cpro/app
BUT the website is NOT very user-friendly.
I looked at 1935 to see if I could find the Harlams. I downloaded the file, but received no message re: downloading. Quite a while later, the directory popped up in a new window.
I did not find the Harlams in that, though.
You may have better luck in searching these directories -- just be patient, though! :) I found the site confusing.
Note: The website search feature (top right) does NOT search within the directories. I tried it with some basic names and it doesn't work. :(
Once you download the pdf, then you can search within the directory -- and that seems to work.