“ But where future tax revenues are the only source to which creditors can look for payment of their claims, considered estimates of those revenues constitute the only available basis for appraising the respective interests of different classes of creditors. In order that a court may determine the fairness of the total amount of cash or securities offered to creditors by the plan, the court must have before it data which will permit a reasonable, and hence an informed, estimate of the probable future revenues available for the satisfaction of creditors. ”

“ Appropriate facts which might have been considered, but which are nowhere referred to in the opinions or findings below, are the revenues which have in the past been received from each source of taxation, the present assessed value of property subject to each tax, the tax rates currently prescribed, the probable effect on future revenues of a revision in the tax structure adopted in 1941, the extent of past tax delinquencies, and any general economic conditions of the District which may reasonably be expected to affect the percentage of future delinquencies. ”

“ Hence we concluded that findings of the future earnings of the reorganized railroad distributable to each class of security holders and creditors were an adequate substitute for findings of asset value in terms of dollars and cents, which we held could be dispensed with as affording no more than a delusive appearance of a certainty which the subject matter did not warrant. ”