An Ebay purchase from Traverse City. A divided back postcard with the date "May 13, 1913" on the back, "from Hattie Monroe."

Written on the back:
I see
Lila Egglie
Hattie Monroe
Mabel Monroe
Audry Engstrom
Ralph Monroe Fatty
I think the one in the Middle in Anna McGarry
Elsie Eggli
I think this is the Sabin School

There is only one boy in the photo, standing back row at left, so that must be Ralph Monroe.