Biography
Marcia Timmel was a longtime member of the Olive Branch / Dorothy Day Catholic Worker in Washington, DC, and one of the most active women in the early Plowshares movement. She participated in Plowshares Number Four (1982) and acted alone in the 1988 Credo Plowshares, where she hammered and poured blood on a Textron Defense System MX missile display at the Air Force Association Arms Bazaar at the Sheraton-Washington Hotel, leaving her own creed of life and faith in response to the bazaar's slogan "Freedom: A Creed To Believe In."
Plowshares Number Four custody reconstruction
The original January 1983 report names all seven and dates the action and arrest to November 14, 1982. It reports December 22 release on a promise to appear, after initial imprisonment. This 38-day detention is separate from the later sentence, so time outside prison is excluded.
The May 20, 1983 disposition was four months. A separate record preserves that sentence without equating sentence length with time actually served or copying the initial arrest into later custody.
Issue 18 reports actual June 13, 1983 release. This is the 1982–1983 Electric Boat case, not the later Credo prosecution.
Sources: The Nuclear Resister 14, January 14, 1983, pages 3–4; issue 17, June 6, 1983, page 5; issue 18, July 7, 1983, printed page 6; Art Laffin participant chronology.
Individually documented 1985–1986 custody chronology
During the December 27–30, 1985 Holy Innocents gathering in Washington, Marcia Timmel and Brian Barrett were arrested on the Saturday White House tour for chanting a litany. December 28 is that Saturday; the original explicitly says Timmel was physically released that day, while Barrett remained held until Monday. His longer outcome is not assigned to her. This brief 1985 action is separate from her 1982–1983 Plowshares Number Four stays and 1988 Credo case. No actual prison-entry timestamp or additional full served day is claimed.
The Nuclear Resister No. 37, January 20, 1986, original PDF pages [5].