There has always been very little known about the Elm St. Extension. Just ask yourself how many 11/22/63 images are there of the Elm St Ext? And it runs directly passed the TSBD front door. The same goes for the Rail Road Yard that the Elm St. Extension grants entrance/egress. How many 11/22/63 images of the Rail Road Yard are there? We do have the Darnell Film showing Officer Roger Craig walking across that string of passenger train cars back there, but what exactly was behind that string of passenger train cars? I am still waiting on the Sixth Floor Museum to release the concluding half of the Darnell Film. It's been over 1 yr since they released the Darnell Film opening :20, and not a peep has come out of them since. That Darnell Film final half not only contains the previously mentioned Rail Road Yard footage, it also shows that Phony DPD Motorcycle Cop that has been passed off as being Officer Haygood for 62+ years. That "One Glove Cop" is not Haygood. And where is this "One Glove Cop" last seen heading on the Darnell Film? Straight down the Elm St Extension toward the "wide open" Huge Gates/TSBD.