In 1912, the American Geographical Society conducted an excursion "on a liberal scale" around the United States. About fortythree European and about ninety American geographers travelled, primarily by train, from New York City via a northern route to Seattle, south to San Francisco, east to the Great Salt Lake and Grand Canyon, and then on to Washington DC and finally New York. The trip lasted almost two months, August 22nd through October 18th, and involved considerable hosting of side-trips and banquets by learned societies and chambers of comerce across the country.
Our objective here is to bring the trip to life via Google Earth.
We have a copy of the volume that reported the trip. It includes this map , and the itinerary (transcribed here) .
We have Google Earth. Most imporant, we have our imaginations.