Secretary of State James A. Baker III, on an eight-day, nine-nation trip overseas, meets with Iraqi Foreign Minister Tariq Aziz tomorrow in Geneva. Here's a list of the Washington officials who were part of the Baker delegation upon its arrival in London Sunday. The delegation may add or drop members as Baker travels through Europe and the Mideast.

Robert M. Kimmitt, undersecretary of state for political affairs.

Raymond G.H. Seitz, assistant secretary of state for European and Canadian affairs.

John H. Kelly, assistant secretary of state for Near Eastern and South Asian affairs.

Margaret D. Tutwiler, assistant secretary of state for public affairs and spokesman.

Dennis B. Ross, director, Policy Planning Staff, State Department.

Stephen J. Hadley, assistant secretary for international security policy, Defense Department.

Lt. Gen. Howard D. Graves, assistant to the chairman, Joint Chiefs of Staff, Defense Department.

Sandra Charles, director, Near Eastern and South Asian affairs, National Security Council.

William J. Burns, principal deputy director, Policy Planning Staff, State Department.

V. Kim Hoggard, deputy assistant secretary of state for public affairs.

Robert Pearson, deputy executive secretary, State Department.

Elizabeth D. McKune, deputy executive secretary, executive secretariat, State Department.

Karen H. Groomes, special assistant to the secretary of state and director of scheduling.

Caron S. Jackson, assistant to the secretary of state.

Lynwood M. Dent, executive director, executive secretariat, State Department.