MILES DAVIS ON COLUMBIA

I've been working about this subject the last 2 years and I think I've collected almost all data.
still in need for a couple of info.

-In Person Friday Night at the Blackhawk Vol. 1, Columbia CL 1669
-In Person Saturday Night at the Blackhawk Vol. 2, Columbia CL 1670
recorded April 1961, released 1961
different editions exist: the one I should call original is six eyes, double deep groove, NO CBS

-At Carnegie Hall, Columbia CL 1812
recorded May 1961, released 1962
I've got two different issues:
1) two eyes, no dg, guaranteed high fidelity
2) six eyes, no dg, demonstration copy (on labels and cover), CBS at hr 12 
our host, LJC, limits six eyes labels to 1961 and 1812 is from 1962, the last six eyes Davis on Columbia I've ever seen.

preeceding three Davis are: 1656, 1669 and 1670. all have six eyes labels, all are known with CBS at hr 12
1656 is NOT known without CBS
1669 and 1670 are known without CBS
1812 is NOT known without CBS

any thoughts? thx
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