The apportionment of seats in this House of Representatives was based on the 1910 United States census.

In the House, the Republicans had actually won a plurality, but as the Progressives and Socialist Representative Meyer London caucused with the Democrats, this gave them the operational majority of the nearly evenly divided chamber, thus giving the Democrats full control of Congress, and along with President Wilson maintaining an overall federal government trifecta.

Because of the 17th Amendment, starting in 1914 U.S. senators were directly elected instead of by the state legislatures.

Lists of committees and their party leaders for members of the House and Senate committees can be found through the Official Congressional Directory at the bottom of this article.

The directory after the pages of terms of service lists committees of the Senate, House (Standing with Subcommittees, Select and Special) and Joint and, after that, House/Senate committee assignments.