I hope to assemble useful resources relating to Sourdough Trail here. Please let me know if you know of any that should be included.
1. The following link will take you to a Google Maps satellite image in which my observation area–roughly what is known as Gardner Park–constitutes the central vertical strip (10-20% of the full width):
2. The City of Bozeman has a not-too-inspiring image of Gardner Park (covering most of the area I roam in for the project) at this page.