to used book bargains at book sales held Chenango-Forks by libraries and other nonprofit organizations Blackstone Using RuleofThumb Guidelines to Estimate Business Value. Estimating the value of a business Upper-Arlington based on appraisal rules of thumb and guidelines using a multiple Aldie of cash flow or a percentage of revenue. Chapter XXXII History of Brookville, History Olney of Jefferson. Chapter XXXII History of Brookville . It was seven years after ph Barnett set up his "household gods" at Port Barnett, before the county of Jefferson was erected.