Whether it’s an emperor penguin launching from the sea, a playful Adélie penguin or a colony of king penguins, these globe-spanning seabirds inspire awe and conservation.

Visitors to the Carnegie Museum of Art in Pittsburgh are forgiven for not knowing the name Raymond Saunders (b. 1934). Eric Crosby, the museum’s director, was unfamiliar with Saunders when Crosby ...