Use the earlier debate series

Warning²Federal courts, Illinois courts21st and 22nd editions

The Congressional Record begins in 1873; a debate through that year is cited instead to the Annals of Congress, the Register of Debates, or the Congressional Globe.¹

1. 1R. 13.5 Debates.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.