66th Cong., 2d Sess. (1912) - Proceedings on the consideration of the articles of impeachment appear on pages 854-58 (available at HathiTrust External).

62d Cong., 3d Sess. (1912) - Trial proceedings can be located through the index under the entry “Archbald, Robert W.” If using the Serial Set, the associated volume is 6328.

48 Cong. Rec. 8904-34 (1912) - Debate and vote on the articles of impeachment in the House can be located on pages 8904-34. Information about the Senate trial is held in volume 49; pre-trial proceedings can be found in volume 48 (available at govinfo).

Volumes one and two contain the proceedings in the Senate. The index for both volumes is in volume two. Volume three, which is indexed, contains the proceedings in the House along with documents submitted to the House and testimony taken from witnesses. A very valuable and well organized document useful for tracing this trial and for the evolution of the impeachment process. If using the Serial Set, the associated volumes are 6356-58 (available at HathiTrust External).

Contains the articles of impeachment and a review of the evidence concerning each article. Found in volume 6137.

Investigative hearings conducted by the House Committee on the Judiciary. Very detailed but not indexed (available at HathiTrust External).