Executive Order—Amendment of Civil Service Rules
Special Departmental Rule No. 1 is hereby amended so as to include among the places excepted from examination therein the following:
In the Post-Office Department, office of the First Assistant Postmaster-General: Assistant superintendent of free delivery.
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/205697