January 1950: [abbreviation for estimated or established]her [more efficient than a fluorescent [[a sleepy volcano] form of a tulip]]er[the type of ice that can [___ or swim] a ship] discovered [Mary had a little one]da bacteriop[creepy [you should [Daffy or Donald] when you hear this on the fairway]st witch, e.g. Baba Yaga]e, which her hus[rubber or marching] took credit for, [[this machine is a mystery, zoinks!] [you're $200 richer after passing this in [a grass lawn is this type of culture]poly]gh lost his]ning him the Nobel [hit the bell, win a ___] in [Italian family who ruled [her machine claimed "the dog days are over"], Italy in the 15th century]ne in 1958.
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Hint 1 - early puzzle
Hint 2 - mid puzzle
Hint 3 - late puzzle