To All Members: I'm new here so please bear with me. Right now my prime effort is in locating existing Rh/Tt sites that still have at least part of their structures identifiable. (Such as Tt rings, pits; Rh outlines, inspection pits, etc.) Of course whole Rh or Tt or both is better. This all started when I noticed on a page of the Greenfield Village website a comment that there were only seven ( yes 7) Rh/Tt sets still in operation in the US. That is so much hogwash. I've identified more than that in New England alone. You fellow members will be a big help in locating these along the Frisco route that were either theirs or other RRs that they connected with or shared. One thing though: It is much better for pinpointing if you would provide the coordinates (lat/lon) for each site. Then I can use all the online mapping sources to locate them accurately. Thanks in advance to all of you that are willing to help me on this project.