Good post. Rose Ball wasn't one of the original directors, though that claim is made online. The original charter lists the directors as
Charles T. Russell
William I. Mann
Maria F. Fussell
William C. McMillan
Simon O. Blunden
J. B. Adamson
Joseph F. Smith
Mann was an engineer and manger for some of the most important Steel Mills and had the reputation of being well educated and well spoken; W. C. MacMillan was college graduate and a phramcist; S. O. Blunden owned a fancy goods shop (women's wear) and later traveled for a large wholesale house; J. B. Adamson was a businessman turned evangelist; J. F. Smith was a partner in a prominent Merchant Tailor business and had realestate and printing interests. Rosa Ball didn't become a director until some years later.
You will find some information here: http://truthhistory.blogspot.com/ . Not available without invitation is a long essay on some of these men found on a private blog. Ask the owner of truthhistory for access, but be prepared to be turned down. I understand that the first volume of their new book is coming out in March? next year. It will be the most authoritative Watch Tower movement history ever published.