Dad's Letter

This is a handwritten letter from my Dad to me.  It had no date so it could have been anytime after I left home in 1957.  I am going to type here what it says:
"My Very Wonderful Son,
      I felt so low when you left I just had to go upstairs and write a letter.  This sounds very unmanly, but I felt so much like putting my arms around you and kissing you like I used to do when you were a little boy.  My, how I loved you, and I love you no less now.  Somehow I have a very difficult time showing my affection.  It seems so effeminate.  No one seemed to "make" over you when you left you must have felt as if no one cared.  Well, you must also know that you mean everything to all of us.  I am always so proud of you when you come to my classes.  I always talk about you to everyone.  I know how grandpa must have felt about me.
    Well, your tears drew mine and I just had to write.  If I don't quit and mail it now, I may not mail it at all.
Dad
Not sure what this all meant.  It seems pretty important, but I'm not exactly sure why.  I think I'll just let it be.  I do think he was teaching education classes at Cal State Los Angeles at the time which would have meant, I think, that I probably was teaching in Hyampom or Porterville in about the early 1960's.