The Detroit Institute of Arts, renowned for its Diego Rivera murals, is set to open a public exhibition of his works and those of his wife, Frida Kahlo, this month, the biggest since the museum's collection was threatened in the city's bankruptcy.

"Diego Rivera and Frida Kahlo in Detroit" will feature nearly 70 works by the Mexican artists and is the first to focus on the 11 months they spent in Detroit in 1932 and 1933, when Rivera worked mainly on the "Detroit Industry" murals.

Rivera's preparatory drawings for the 27-panel "Detroit Industry" frescoes, which have not been shown in nearly 30 years, will be part of the exhibit opening on Sunday.