Benjamin N. Cardozo,
American Telephone Telegraph Company v…
“ Original cost' or 'cost,' as applied to telephone plant, franchises, patent rights, and right-of-way, means the actual money cost of (or the current money value of any consideration other than money exchanged for) property at the time when it was first dedicated to the public use, whether by the accounting company or by a predecessor public utility.' If actual costs are unknown, estimates are to take their place. ”
