Executive Order—Amendment of Civil Service Rules
Clause 5 of Railway Mail Rule II is hereby amended by adding thereto the following clauses:
(d) Clerks employed exclusively as porters in handling mail matter in bulk, in sacks, or pouches, and not otherwise.
(e) Clerks employed exclusively on steamboats.
Benjamin Harrison, Executive Order—Amendment of Civil Service Rules Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/206080