Answer: HST
HST is a crossword puzzle answer that we have spotted 166 times.
Referring Clues:
- 57-Down's predecessor
 - Presidential inits.
 - Former White House inits.
 - Presidential monogram
 - 33d Pres.
 - Pres. initials
 - Honolulu hrs.
 - Former D.C. inits.
 - Potsdam Conference attendee: Abbr.
 - Inits. in 1940's news
 - Monogram of 40-Down's predecessor
 - He upset T.E.D. in 1948
 - His V.P. was Barkley
 - Barkley served with him: Abbr.
 - V-J Day pres.
 - D.D.E.'s predecessor
 - 33rd U.S. pres.
 - Bygone presidential inits.
 - President after F.D.R.
 - V.P. for just two months
 - Old White House inits.
 - Multitude
 - Presidential inits. from Missouri
 - "The buck stops here" prez
 - Pres. when the cold war began
 - Inits. in a 1948 upset
 - F.D.R.'s successor
 - President before D.D.E.
 - President who created the N.S.C.
 - First U.S. pres. to travel in a submarine
 - He appointed the first chairman of the A.E.C.
 - Barkley was his V.P.
 - Post W.W. II pres.
 - 1940s presidential inits.
 - V.P. between Wallace and Barkley
 - F.D.R. successor
 - Fair Deal president, for short
 - Pres. elected in '48
 - 1940s-'50s White House inits.
 - The 33rd pres.
 - Pres. when the C.I.A. was created
 - Surprise winner of 1948: Abbr.
 - Fair Deal prez
 - Clock setting in Diamond Head (abbr.)
 - V-E Day White House monogram
 - FDR's successor
 - Gen. MacArthur's dismisser
 - DDE's predecessor
 - "The buck stops here" monogram
 - Follower of FDR
 - Fair Deal monogram
 - FDR successor
 - "The Buck Stops Here" pres.
 - 33rd president's monogram
 - FDR-DDE connection
 - Signer of the UN charter
 - President before DDE
 - Pres. when NATO was formed
 - FDR's third running mate
 - He followed FDR
 - 116-Down's last VP
 - FDR's last VP
 - Only pres. born in Missouri
 - Post-WWII monogram
 - Marshall Plan pres.
 - He edged TED in '48
 - DDE predecessor
 - 23-Across successor
 - Preceder of 63-Down
 - White House monogram
 - FDR follower
 - Thirty-third president's monogram
 - He preceded D.D.E.
 - WWII figure
 - Ike's predecessor
 - F.D.R.'s third VP
 - F.D.R. follower
 - Pres. with a Fair Deal
 - V-E Day president
 - F.D.R.'s veep
 - White House monogram, 1945-53
 - D.D.E. predecessor
 - Successor to F.D.R.
 - Pres. during WWII
 - NATO ratification signer
 - Pres. with the Marshall Plan
 - Only 20th-century prez without a coll. degree
 - One of FDR's V.P.s
 - One-time senator from MO
 - Prez who said "If you can't stand the heat, get out of the kitchen"
 - FDR's follower
 - Cold war inits.
 - Pres. when NATO was founded
 - Thirty-third pres.
 - Pres. from Missouri
 - Pres. from Lamar
 - Creator of the USAF
 - Fair Deal initials
 - President when the U.N. was created
 - FDR's running mate
 - FDR / ___ / DDE
 - Fair Deal pres.
 - Post-WWII pres.
 - White House initials
 - 33rd prez
 - Pres. after FDR
 - Prez after FDR
 - Prez before DDE
 - Follower of 36-Across
 - President after FDR
 - 33rd pres.
 - One of the subjects of the best-selling '02 book "The Conquerors"
 - FDR veep
 - Pres.who said the word "communism" six times in his inaugural address.
 - Successor of FDR
 - '40s-'50s D.C. initials
 - Korean War pres.
 - Electee of '48
 - He edged TED in 1948
 - Prez when WWII ended
 - DDE's forerunner
 - Eleanor : F.D.R. :: Bess : ___
 - 13-Down predecessor
 - DDEs predecessor
 - F.D.R.'s third veep
 - Only 20th-century president whose three distinct initials are in alphabetical order
 - He called the U.S. pres. a "glorified public relations man"
 - NATO founder
 - FDR's last vice president
 - GST variation
 - "The buck stops here" POTUS
 - Post-FDR prez
 - Truman's monogram
 - FDR-DDE go-between
 - 1940s prez
 - Korean War leader, for short
 - Fig. in 37 Across' creation
 - 33rd U.S. prez
 - "The buck stops here" presidential inits.
 - Prez elected in '48
 - Pres. between FDR and DDE
 - F.D.R.'s last veep
 - Prez at LBJ's Medicare signing
 - Pres. before DDE
 - '48 electee
 - Margaret's father's monogram
 - Inits. of 1948
 - President when WWII ended
 - Only president from Mo.
 - He served the fewest 20th-century days (83) as U.S. VP
 - VP who became president
 - Combined Fed. and Prov. sales tax
 - 1940s pres.
 - It's two hours behind Pacific: Abbr.
 - Maui setting: Abbr.
 - WWII president
 - Clock setting on the Big Island: Abbr.
 - Last WWII president
 - Honolulu setting: Abbr.
 - V-J Day prez
 - Former presidential inits.
 - Prez who had no VP in his first term
 - 18-Down predecessor
 - Lamar, mo. favorite son
 - Follower of F.D.R.
 - Prez after F.D.R.
 
Last Seen In:
- LA Times - September 10, 2025
 - New York Times - August 28, 2025
 - LA Times - October 24, 2024
 - New York Times - September 18, 2024
 - LA Times - October 31, 2023
 - LA Times - June 06, 2023
 - New York Times - May 23, 2023
 - New York Times - December 17, 2021
 - LA Times - November 10, 2021
 - LA Times - October 11, 2021
 - LA Times - September 11, 2021
 - LA Times - September 01, 2021
 - New York Times - August 02, 2021
 - LA Times - May 24, 2021
 - LA Times - March 30, 2021
 - LA Times - February 14, 2021
 - LA Times - February 02, 2021
 - New York Times - November 26, 2020
 - New York Times - November 01, 2020
 - LA Times - October 04, 2020
 
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