CSA T-68 PF-11 note help

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Shane Mason
CSA T-68 PF-11 note help

I came across this T-68 while looking to thin my collection some.  I noticed that in the margin there is an odd script.  It appears to say "McCown."  The only reference I have yet found to this is Col. James McCown, 5th Reg. MO volunteers, whose regiment seemed to be in continuous battle, from about 1862 to 1864.  Could this be relevant?  Why would his name be in the margin of a sheet?  Why is there anything in the sheet margin?  There are no special endorsements or field issuances on the back.

Thanks in advance