Senator George McGovern, D-SD, checks notes in his Capitol office today as he prepares to challenge in Senate debate the construction of the Sentinel antiballistic missile system. Boxes contain letters for and against the system, and also some background material which McGovern plans to use in challenging speech. Earlier, Democrats named McGovern to head a party group to study reform of the Democratic nomination procedures.

Photo is dated 1969.

Photo measures 8 x 10.5 inches.