The Glass Menagerie by Tennessee Williams

From the text:

This is our father who left us a long time ago. He was a telephone man who fell in love with long distances; he gave up his job with the telephone company and skipped the light fantastic out of town. . . .The last we heard of him was a picture postcard from Mazatlan, on the Pacific coast of Mexico, containing a message of two words -
'Hello - Good-bye!' and no address.