Platt was a portraitist, sculpting busts and commemorative medals of many important historical figures of the 19th and 20th centuries, especially within the judiciary and government.

Platt acted as her own business agent negotiating all aspects of her work including materials, contracts, casting, proofs, photography, shipping arrangements, and communications with her customers.

Platt studied exclusively with the Norwegian-born sculptor Arthur Lee,[4] and Edward McCarten from 1929 to 1933 at the Art Students League of New York.

Platt was found dead in her studio at the Park Plaza Hotel on West 77th Street in New York City on August 30, 1974.

Her death was initially ascribed to heart failure,[5] but it was later determined that she was killed by Calvin Jackson, a serial killer who had murdered eight other women, most in the Park Plaza where he also lived.

[3] Most of Platt's portrait busts were sculpted in clay and then employed the lost-wax method to cast her finished pieces in bronze or plaster.

Cast in Durastone, under the supervision of Ms. Platt, each replica has been hand rubbed to a rich, bronze-color finish, stands 9.5" tall, including black base, and bears the signatures of both sculptor and subject.