1) DC monogram 2) WWII Pres 3) After FDR 4) BED teeter 5) Before DDE 6) Berlin Airlift pres 7) Between FDR and DDE 8) Bygone presidential initials 9) Cold war initials 10) Cold War pres 11) DDE preceder 12) DDE predecessor 13) ERP institutor 14) Erstwhile White House letters 15) Fair Deal initials 16) Fair Deal monogram Found on https://www.crosswordclues.com/clue/hst