SUNDAY BUSINESS

An article last Sunday about the mattress seller Casper’s ambitions described incorrectly the product of one of the company’s competitors. The competitor, Saatva, does not imitate Casper’s mattress-in-a box concept; it ships uncompressed mattresses.

ARTS & LEISURE

A picture caption with this weekend’s cover article about the production of Gershwin’s “Porgy and Bess” that opens the Metropolitan Opera’s season misstates the year the photo was taken. It was from a 1953 performance, not a 1935 performance.

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An article about architecture last Sunday in the New Season special issue misstated the name of the architecture firm for the Dock 72 project. It is S9 Architecture, not S9.

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An article on Sept. 8 about Bauhaus described incorrectly the Heinrich Neugeboren Bach monument. While it was never realized in his lifetime, it was constructed, and is still standing, in Leverkusen, Germany.