Don't know if anyone has posted this episode on the trace evidence podcast already but I thought it was detailed and well executed.
009 - The Disappearance of the Fort Worth Three – Trace Evidence – Podcast
Since there's been very little evidence about the girls wherabouts there's been alot of speculation through the years. Perhaps this was mentioned before cause this is a long thread.
A few thoughts: A security guard reported seeing the girls inside of the truck of another security guard that day and he even made contact with them and they seemed in a good mood. He contacted LE but the lead wasn't followed until 40 years later. The "suspect" was named by the other security guard. Apparently LE called him up but he had no memory of seeing with the girls that day. Either the observer didn't see the girls, or the "suspect" was lying. The podd speculated that the "suspect" may have been using a false name, so the security guard that was called up wasn't the person that was seen with the girls.
The letter that was written was most likely posted from Fort Worth. Why it was posted it's anyones guess. Probably to win time and try to mislead the families. However, it's obvious that Rachel didn't write it. I think someone made Julie Moseley write it because it was written in a childish way.
The poddcast mentioned a few possible suspects, one that was mentioned was Mike DeBardeleben, a serial killer and counterfeiter known to hang out in malls and lure girls and was operating in Texas at the time. He would sometimes pose as a police officer. What goes against it is that he's one of the smartest and most organized criminals iI heard of. Would he take the risk with 3 girls? I doubt it but who knows.
I would like to know more about that security guard. Was it a dead end or who was he? Considering that an eye witness saw him with the girls in his truck.
A security guard or police officer picking them up is a strong possability, another possability is that someone who knew Rachel stopped by and somehow lured them into the car. I think Rachel was the real target.