Charity Begins At Home, it was decided this year by the Cambridge committee for the President's Birthday Ball. Therefore, instead of sending the proceeds to the national committee in New York, the committee bought this iron lung last night presented it to Cambridge City Hospital. Left to right: John J. Carver, chairman of the hospital trustees; Acting Mayor Francis L. Sennett; Daniel J. O'Brien, Birthday ball chairman, and Nurses Anne Smith and Angeline Silvestri.