Other than some rare items like the Rapido chopper, Columbia SS-5 (I think), Spaceliner tank, and couple BMX mags, the rest I'm sorry to say, is destined to be parted out (if we are lucky) or crushed...every last one. I can tell most of these are not older than the 60s and mostly from the 70s-90s, most are stripped clean, and they all have been sitting in that terrible environment for many decades. All piled up like a junkyard, too. Have you seen the algae or moss and rust on some of those bikes? What you see is only 20% of what really lies in there. I'm really merciful on Classics, but unless this place was REAL close to me, I wouldn't be interested, and then, I wouldn't pay a penny over $200. I can tell most of the wheels are totally smashed so there goes a good portion of the mess into the crusher anyhow.
RIP bikes.
EDIT: that was a Murray Chopper, not a Columbia.