Edwin Clarkson Smith, 90, a retired machinist at the old Naval Gun Factory here, died of congestive heart failure Friday at his home in Washington.

He worked at the Gun Factory, also known as the Washington Navy Yard, from the mid-1930s until retiring in 1960.

Since then, Mr. Smith had been active in organizing senior citizen clubs for the YWCA, the Episcopal church's Sargent House Project and the Episcopal Ministry to the Aging. He taught bridge at a number of the clubs.

He was born in Lowell, Mass., and educated in Fitchburg, Mass. During World War I, he served as chief clerk in the Army adjutant general's office in Washington.

Mr. Smith then returned to New England, where he worked as a machinist at a number of private firms until coming back to Washington in the mid-1930s.

He was a member of the Kenneth Nash Post No. 8 of the American Legion, the Masons and St. Mark's Episcopal Church in Washington.

He is survived by his wife, the former Aline Munsen Parker of Washington.

The family suggests that expressions of sympathy be in the form of contributions to a memorial in his name at St. Mark's Church.