1307 North Mangum, 1930s Built on land that was originally part of the property of 1311 North Mangum Street, directly to the north, the International Style house at 1307 North Mangum Street was built by Mr. and Mrs. Howard Gamble in 1935. Mrs. Gamble's father, Richard E. Dillard, who owned 1311 North Mangum, subdivided his property and gave the...