Goldthwaite Higginson Dorr, 101, a New York lawyer who specialized in anti-trust law and whose career included numerous assignments for the federal government, died Wednesday of pneumonia at his Carmel, N.Y. home.

Among the many posts he held for the government were assistant director of munitions during World War I, special assistant to the Secretary of War during World War II, member of the President's cabinet committee on Palestine in 1946 and representative of the Department of Defense at the Council of Foreign Ministers meeting in Paris 1949.

Born in Roseville, N.J. Mr. Dorr was a graduate of Harvard College and earned a law degree of Columbia University. He served as an ordinary seaman in the Navy during the Spanish-Amrican War.

He had been chairman of the board of trustees of Robert College in Istanbul, Turkey, and was a member of the Harvard Corporation, the Coucil on Foreign Relations, the Metropolitan, Cosmos and Harvard clubs.

Mr. Dorr taught law at both Harvard and Columbia universities and practised law for 70 years. He retired in 1974 from Mudge, Rose. Guthrie and Alexander in New York, the firm of which former President Richard Nixon was a partner.

He is survived by two sons, Russell H. Dorr of Annapolis, and John Van N. Dorr of Bethesda; a daughter, Katherine Bauer of Cambridge, Mass; nine grandchildrern and 13 greatgrandchildren.

The family suggests that expressions of sympathy may be in the form of contributions to Robert College of Istanbul, 330 Madison Ave., New York, N.Y.