Answer: rmn

AnswerCrossword Clue
RMND.D.E's Veep
RMNOld presidential inits.
RMNJ.F.K. debater in 1960
RMNHe outpolled H.H.H. in '68
RMN1970's White House inits.
RMNNotable resignee: Abbr.
RMNOld White House inits.
RMNFormer White House inits.
RMN"Six Crises" monogram
RMNPresidential inits.
RMNWinner over G.S.M.
RMNG.R.F.'s predecessor
RMNLoser to J.F.K.
RMNSuccessor to L.B.J.
RMNSan Clemente initials
RMNJFK debate opponent
RMNPresidential monogram
RMNHe followed LBJ
RMN"Beyond Peace" author's monogram
RMND.D.E.'s veep
RMNVictor over H.H.H.
RMND.D.E.'s running mate
RMNWatergate initials
RMNWatergate inits.
RMNVice President Alben Barkley's successor's inits.
RMNOnly U.S. pres. to resign
RMNJFK's debater in 1960
RMNHe yielded to GRF
RMNJ.F.K. debater in '60
RMNDDE running mate
RMNHHH defeater
RMNL.B.J. follower
RMNJ.F.K. alternative in 1960
RMNPres. who resigned in '74
RMNLBJ's successor
RMNLoser to JFK
RMNAfter LBJ
RMN1972 GOP monogram
RMNVeep before L.B.J.
RMNMonogram of the president who created the EPA