Could The checked suit guy be the same owner of the Men's Cap that was found near the boy?
Could the Cap guy and the Artist Sketch guy be the same as the unidentified Checked Suit guy?
http://troytaylorbooks.blogspot.com/2014/02/the-boy-in-box.html
label inside of the blue cap led police to Robbins Eagle Hat & Cap Company in Philadelphia. Proprietor Hannah Robbins said that it was one of 12 that had been made from corduroy remnants at some point prior to May 1956. Robbins recalled the particular hat because it had been made without the leather strap, but the purchaser a blond man in his late twenties had returned a few months later to have a strap sewn on. Robbins told the detectives that her customer resembled photographs that she was shown of the Boy in the Box, but she had no record of his name or address.