It was a special treat to “study” the 1967/2017 Grinnell College map! How do you avoid getting lost in the new HSSC? I assume that this new facility will replace the old “heart” of Grinnell, the ARH? I think it’s smart to keep the M&StL tracks as they are, assuming that they are still in place. Certainly, a key landmark for letting you know where you are versus where you should be. There was a side-track beside the old heating plaw occasion would provide “sport” for male students to “reposition” a tank car waiting there.
Again, congratulations on your 50 years presentation of Grinnell!