Commemorating the Opening of the St. Lawrence Seaway, 1959

& First Day ENTRANCE TO ST. LAWRENCE SEAWAY AT MONTREAL Art Craft of Issue 200000 IROQUOIS LOCK, 768 FT. LONG 80 FT. WIDE 30 FT. DEEP Commemorating OPENING OF THE ST. LAWRENCE SEAWAY 1959 MAS SEN JUNE 26 9:00 A.M. 1959 N. Y. SEAWAY LAWRENCE INITS CORPORATION ST. LAWRENCE SEAWAY Cm 49 FIRST DAY OF ISSUE hidheron