William Howard Taft,
Keller v. Potomac Electric Power Company…
“ The Public Utilities Law is a very comprehensive one. It applies to all public utilities in the District, except steam rilways and steamboat lines. It creates a commission to supervise and regulate them in the matter of rates, tolls, charges, service, joint rates, and other matters of interest to the public. It directs investigation into the financial history and affairs of each utility and its valuation at a fair value as of the time of valuation. ”
