Early Years of Pitzer

For one of my classes I have been looking through the Pitzer History Project and other archived Pitzer materials. The Claremont Colleges Digital Library has collections of scanned photos for all the Claremont Colleges. For Pitzer, they have a photos from the first years of the college that show a different looking place from what we have today. 
This particular picture includes the old Sanborn residence hall that has been removed in the last phase of construction. The three students are walking on a dirt patch that was the incomplete Pellissier Mall, known now as "The Mounds." Another significant feature is that all three are female because the college was all women until 1970. What confuses me is that they are moving their things away from the building, but it was the only residence hall and there were very few structures the direction they were heading. Some of the early photos are known to be posed and this may be a set up one. Their smiles really stand out for me because this was not just the new beginning for them, but a beginning for their college. These unidentified girls were part of an important era of students, along with faculty, that created the Pitzer "ethos" and what they hoped would be a revolutionary form of higher education in America.