The answer to “First name of the 28th U.S. president” in the LA Times Crossword

"Captain's __, stardate ... " 3 ltr "Jailhouse Rock" star 5 ltr "Saint Joan" playwright 4 ltr "Sorry, but it's __ from me" 3 ltr "The Greatest Average American" host Bargatze 4 ltr "Will all great Neptune's __ wash this blood / Clean from my hand?": Macbeth 5 ltr "__ bleu!" 5 ltr Activity of a rogue 7 ltr Actor McKellen 3 ltr Actress Whitman 3 ltr Animosity 6 ltr Austrian lang. 3 ltr Backless tops 7 ltr Bank holding: Abbr. 4 ltr Bauxite, e.g. 3 ltr Beverage suffix 3 ltr Blue Buffalo rival 4 ltr Bring about 6 ltr Bring out the blue pencil again 6 ltr Calligraphy supply 3 ltr Care center 6 ltr Carmichael who plays Lady Edith on "Downton Abbey" 5 ltr Carrot relative 7 ltr Cause of a blank photo 7 ltr Chose 5 ltr Come by honestly 4 ltr Dazed and confused 7 ltr Do the wrong thing 3 ltr Electric current units 7 ltr Fig. texted en route 3 ltr Furtive call 4 ltr Guises for gamers 7 ltr Gumbo vegetable 4 ltr Helen of Troy's mother 4 ltr Helpers in harbors 4 ltr Hush-hush doc 3 ltr Impetus for a bluff, perhaps 4 ltr Land of the Minotaur 5 ltr Laudatory lines 4 ltr Lose it under pressure 5 ltr Makes softer, as sound 7 ltr Mass. summer hrs. 3 ltr Merriment 3 ltr Mil. print 4 ltr Montana neighbor 7 ltr NNE U-turn 3 ltr Old cloth 3 ltr Online NYSE choice 6 ltr Org. 4 ltr Outfits 4 ltr Path 6 ltr Positive reply to "How's your health?" 7 ltr Property claim 4 ltr Puts back to zero 6 ltr RR stop 3 ltr Really gets to 4 ltr Really gets to 7 ltr Reminiscent of an almond's flavor, say 7 ltr Scott Turow work 4 ltr