Answer:

SAL

AnswerCrossword Clue
SALActor Mineo
SALMineo of "Rebel Without a Cause"
SAL.. soda
SAL"My gal" of song
SALGal of song
SALKind of soda
SAL"Exodus" actor Mineo
SALBaseballer Maglie
SALCosta Rican condiment
SALMineo
SALMineo, for one
SALGirl of song
SAL"They called her frivolous .."
SALParadise in "On the Road"
SAL(Possible) g(o)al of s(h)o(ppi)ng
SALJames Franco film about actor Mineo
SALMineo of "Cheyenne Autumn"
SALPharmacist's compound
SALKerouac protagonist
SAL"On the Road" narrator
SALBando of baseball
SAL"My gal"
SALMule of song
SALBando or Maglie
SALFrivolous gal of wong
SALErie Canal mule
SALBaseball's Bando
SALMineo or Maglie
SAL.. ammoniac
SAL"Erie Canal" mule
SAL"My Gal .."
SAL... soda
SAL"My Gal ..."
SAL... Paradise ("On the Road" narrator)
SALCape Verde island
SAL... volatile
SALBarge puller of song
SAL... ammoniac
SAL"On The Road" protagonist ... Paradise
SAL"On the Road" narrator ... Paradise