The women, especially Mrs. Cabot, appear to be wearing riding outfits with matching bowler hats. The event is unidentified but is probably at The Country Club. From left to right:

• Olivia Ames Cabot (1893-1978). In 1927, she married Henry Bromfield Cabot Jr. who grew up on Heath St.
• Abigail Adams Homans (1879-1974), the seated woman in the multi-colored coat. She was the great-great-granddaughter of President John Adams and named after his wife. In 1907, she married Robert Homans, a lawyer, and they lived in Boston.
• Constance Wharton Smith (1894-1965), standing woman on the right. She was to married Henry St. John Smith and lived in Portland, Maine. By 1930 she was divorced and living in Boston with her two children.