Department of Education, City of New York. April 5, 1918. To the public: On Saturday of this week the Third Liberty Loan will be opened to popular subscription … To Fulfill this sacred obligation the national government has issued bonds in denominations of $50, $100, $500 and $1,000. The return of the full amount of the money invested by purchasers is guaranteed by the government with interest at 4 1/4% ... Very truly yours, Arthur S. Summers, president, Board of Education. Gustave Straubenmuller, acting superintendent of schools. William J. O'Shea, district superintendent. Assigned to War Service, page [1].