[Boatanchors] Tube crossreference on line? 8643, 8072

[Artmouton]

I just picked up a large number of tubes from a neighbor.  His company 
(which provides commo to offshore oil) is cleaning out and I was invited to 
pick up whatever was in the junk pile.  Large number of tubes, mostly 
receiver type, but with irregular tube numbers.  I was looking for any, 
online, cross-reference for these commercially numbered tubes.
Also anyone out there has any idea if the following large, transmitter / 
amplifier tubes have any use: 8643, 8072.
These guys even had some NOS 807's in the box.
Art K5FNQ



Art Mouton

"[S]o long as the people do not care to exercise their freedom,
those who wish to tyrannize will do so; for tyrants are active
and ardent, and will devote themselves in the name of any number
of gods, religious and otherwise, to put shackles upon sleeping
men." --Voltaire