If you are talking about the common roller bandage, a good place to check is "The Hospital Stewards Manual" by Woodward. You can find it in google books. Pages 304-306 talk about sizes and how to roll them. It also gives basic instructions on how to make a bandage roller. Interestingly enough it also says that the roller bandages should be reserved for use with fractures as its length, up to 7 yards, is unwieldy especially in the field. They are relatively easy to make at home requiring only muslin, something to cut it to size and a great deal of patience. They need to be rolled tightly and a 7 yard strip of muslin can be frustrating. For a southern impression you could also use the bed sheeting or shirt material or whatever was on hand for the ladies to roll. Union surgeons would would have had access to better material.
your obedient servant,
Surgeon, 2nd Brigade
"not really a surgeon, but I did stay at a Holiday Inn Express"