, THE FOUNDATION FOR ECONOMIC EDUCATION, INC. IRVINGTON·ON·HUDSON. NEW YORK 10533 (914) 591-7230 October 14, 1986 Mr~ Robert F. Sennholz American Book Distributors ';". Spring.Mills, PA 16875' - Dear Bob: " .~ . Thanks for your order and check of October 10 for 200 each of The Law and Mainspring. They'll go out promptly, via United Parcel. We'll hold the special rate on these as long as we can, and will try to give you some advance warning if we have to discontinue the offer~...