[6] After the Chicago World's Fair, the couple bought a farm in New Hampshire, and she took charge of the remodeling of the house and gardens, which she called "Felsengarten".

She argued with Jane Addams in a 1901 forum about the best way to protect young boys working as messengers in the city.

[5][11] In 1922, her seventieth birthday was marked with a celebration at the Ambassador Hotel in Los Angeles, hosted by the California Federation of Music Clubs.

[18] The National Federation of Women's Clubs calls major donors "Rose Fay Thomas Fellows", in her memory.

[20] In 2016, Joan Bentley Hoffman gave a lecture on Rose Fay Thomas's life and work, at the Glessner House Museum.