Its Convention. Proceedings of the ... annual convention held at ... Feb. 16, 17, 18, 19, 20, 1914: t.p. (American Concrete Institute)

Technician workbook, 2001: t.p. (ACI International, Farmington Hills, Mich.)

Phone call to ACI, 1/15/2002: (They are still formally American Concrete Institute; they use ACI International for brevity's sake)

National Association of Cement Users. Convention. Proceedings of the ... annual convention held at ... Dec. 10, 11, 12, 13, 14, 1912: t.p. (National Association of Cement Users)