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Not clearly drawn, as an endgame in chess, 7 letters
Not totally clinched, as a race, 7 letters
Atomic research center site, 9 letters
Manhattan Project setting, 9 letters
Manhattan Project site, 9 letters
New Mexico site where the first atom bomb was developed, 9 letters
Where large mushrooms were produced, 9 letters
Young Rooney backs N.M. town in quest for radio team, 21 letters
Silicon Valley city, 8 letters
1984 Super Bowl winners, 10 letters
California metropolis [SUMMER 1932 and 1984]: 2 wds., 10 letters
California's mixed-up GELS ON SALE?, 10 letters
California's most populous county, 10 letters
Chavez Ravine team, 10 letters
City with two teams that won NFL titles, 10 letters
GELS ON SALE found in California?, 10 letters
Only major U.S. city bisected by a mountain range, 10 letters
See gallons spilled in West Coast city (3,7), 10 letters
Sell a song, surprisingly, capturing heart of 16A in a large city (3,7), 10 letters
Site for a certain 2008 convention, 10 letters
Summers '32 and '84, 10 letters
Trojans' home base, 10 letters
Baseball team always holding Old-Timers' Day?, 17 letters
West Coast tax evaders, 17 letters
Objects of gossip in California?, 15 letters
Gretzky's team (1988-1996), 15 letters
Hideouts for West Coast sportsmen?, 15 letters
West was one from 1960 until 1974, 15 letters
Baby carriages in Southern California?, 15 letters
Pacific Standard and Pacific Daylight?, 15 letters
Publication in which Column One appears, 15 letters