Robert C. Seamans '40, Secretary of the Air Force, will visit Harvard today, and SDS voted last night to greet him with a series of demonstrations.

SDS called a 9:45 a.m. rally at Jefferson Hall, where Seamans is expected to attend physics classes, an 11:45 a.m. rally at Holyoke Center, where Seamans will have lunch; and a 6 p.m. picket line at the Faculty Club, where Seamans will have dinner.

SDS spokesmen said last night that the demonstrations against the Secretary of the Air Force were intended to dramatize demands that the U.S. end the serial warfare and withdraw from Southeast Asia.

Seamans will be here today as a member of the visiting committee of the Physics Department. He is also an Overseer.

Dean Whitlock said last night that he had been informed of the planned demonstrations but had no further information.

A University police spokesman said late last night that the police were unaware of either Seamans's visit or the planned demonstrations and that as yet they had no security plans.

Edwin H. Land '29, president and chairman of the board of the Polaroid Corporation, is also a member of the visiting committee. Demonstrators condemning Polaroid's role in South Africa have made Land a target of protest here in recent years.

Physics Department sources refused comment last night on whether Land would be here today.

A widely-circulated SDS leaflet yesterday mentioned both Seamans and Land. It charged that "Polaroid's investments are a major prop of the South African minority government."

However, protest plans made at last night's meeting focused on Seamans and on the issue of American bombing in Southeast Asia.