Exemptions of Federal employees from civil service requirements by Executive orders, letter transmitting, in response to resolution, Executive orders issued since Mar. 4, 1913, and Executive orders issued from Mar. 4, 1885, to Mar. 4, 1912 [1913], all relating to exemption of Federal employees from civil service requirements or placing under civil service employees previously appointed outside of any eligible list furnished by Civil Service Commission, and so forth.