The 20th Texas Legislature met from January 11 to April 4, 1887, in regular session, and from April 16 to May 15, 1888, in a called session. All members of the House of Representatives and a portion of the members of the Senate were elected in the 1886 general election.
Source material was unclear in which order the two Presidents pro tempore served.
Members of the Twentieth Texas Legislature as of the beginning of the Regular Session, January 11, 1887:
Source material was unclear in which order the representatives served or if they served concurrently.