Richard, in your own opinion, why do you think the LHM sketch was never released by montgomery county police back in March-April 1975 when it could have potentially led to the current persons of interest (Lloyd Welch & Dick Welch) 39 years ago when everything about the case was fresher?
A good question, and one I have been asking since last February when Lloyd was first named as a POI.
It is only speculation as to why MCP would keep that sketch secret for so long. Especially since they DID release the sketch of the Tape Recorder Man (TRM) which was made only the day after the sketch of the Long Haired Man (LHM) was made.
It may be that police had already connected Lloyd Welch to that day at the mall, and even to the LHM sketch by 1 April 1975, and determined that LHM was only an eyewitness rather than a suspect. Maryland Judiciary records have three different birth dates on Lloyd Welch (one would have made him 17 at the time). I believe that the most likely birthdate (December 1956) would mean he had recently turned 18 years old. It might be possible that MCP thought he was still a minor, in which case they would not have released his name. Again, this is just speculation.
It is also possible, as stated by others, that the information simply got buried in the deluge of tips and calls coming in, but it hardly makes sense with all the other information that they DID release at the time. A third girl stating that she was with Sheila and Kate that day and that they were all followed by LHM? Not important enough to mention???