This melody (see below) is sung at our commencement at Westfield State University, MA, USA, every year. The lyrics are attributed to two graduates (from the 1930s) but I don't know where the melody comes from.
X: 1 T: Alma Mater M: 4/4 L: 1/4 K:G BB^AB|d_dcD/2^D/2|EGAG|B4| BB^AB|eBB2|AABA|e_ed2| A3/2A/2 ^G/2A/2B/2A/2 |=G2DD/2^D/|EGAG|B4| d3/2d/ cB|AGE3/2D/|DBB3/2A/|G4| GG2A/^A/|B/GE/2D2|^CDB3/2A/|AG3||
How would I go about researching where the tune comes from? Or is it so common that it is obvious?