Good to hear from you again. I can't help you with the muster cards. I can share this quote from my transcription of Case 1500, where Andrew Osburn is mentioned. It states as follows,"Some time in the Sumer of 1863 I know that William Davis had one bay horse worth one Hundred Dollars also one Iron Gray mare worth about ninety Dollars also one Bay mare worth ninety or ninety five Dollars also one Sorrel Horse one hundred Dollars they also took two saddles & two bridles worth about Twenty five Dollars they also took one knife gun worth about ten Dollars, they also took Goods from Mr. Davises store at the Same time amounting to forty Dollars or upwards, there was present at that time of taking James Sellers & Andrew Osburn in Company with others that I did not know there was also a man there that kept him Self in the Dark and from the Size and appearance of the Man I took it to be William Jaynes." This was a deposition given by one of William Davis's employees. I don't know how accurate the witness was, but Sellers was in Sid Cook's Company of the 7th, as well as Andrew Osburn and Will Jayne. By the way, the capitalizations, punctuation, and spelling belong to the original. I know "Summer of 1863" is a broad time frame, but it may help place Andrew Osburn's wereabouts.
Thank you for the clippings of the Paintsville paper with JB Wells series about the 7th. I am looking forward to the 3rd installment. You have always been generous with your time and information, and I wish you the best in your search for these details on Old Andrew.