I googled(Books) for a history of the 35th Tenn Regiment. I found a book on the 48th Tennessee but most of it is hidden from viewing.
The Confederate Army, A Regiment: An Analysis Of The Forty-Eighth Tennessee ...
By Major Kincaid Gerald
I found this book on Amazon. You can view some pages. Seems to have a large section of roster.
Historical Sketch & Roster Of The Tennessee 35th Infantry Regiment (Tennessee Regimental History Series) (Volume 85)
Link:
35th Tennessee Regiment
Another source is Fold3. At the front of each regiment there are cards that list the Staff Officers and Company officers for the entire period of the war and sometimes it has notes on the history of each company.
I picked the cards for Company B for the dates of Sept/Oct, November/December & Jan/February.
The first one describes how they were assigned duty of collecting wheat. This is also mentioned in the book "Tennesseans in the War".
Second one is blank. This is quite common for these "diaries".
Third is quite interesting in that they traveled from Dalton to Georgia, obviously by rail. Then they turned around and came back to Dalton.
No mention of Ringgold Gap, but that doesn't mean they were not there. I haven't read the histories of the other companies which might say something.