October 31, 1890
Section 7 of Railway Mail Rule IV is hereby amended by inserting in line 7, after the word "days," the following: "or until the emergency ceases."
BENJ. HARRISON
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/205326