Lillian S. Maclay 1906
Address in 1937: 662 West Eighth St Plainfield NJ
student 1908-1909 Mount St Mary's College
teacher 1906-1907 Hackettstown NJ
teacher 1908-?? Scotch Plains NJ
granddaughter of Henrietta Caroline Sperry x1847
Maybe this card was sent by Lil's sister to their mother, or vice versa; it's addressed to the address where Lil will be living in 30 years, so it's probably Lil's parents' address.
Source
All information from One Hundred Year Biographical Directory of Mount Holyoke College 1837-1937, Bulletin Series 30, no. 5; published and compiled by the Alumnae Association of Mount Holyoke College, South Hadley, Massachusetts