A rather old car of Purdue University which was mailed on May 5, 1920: 96 years ago today! I believe this would be currently looking towards the Hello Walk with your back to the Stewart Center.
The stone pillars are still there. The metal gates are long gone. The building on the right side of the card appears to be a building where currently is located either the Math Building or Class of 1950 Lecture Hall. This may have been Purdue Hall. The card also mentions that it is hand tinted.