Career
Together, they began investing in real estate in the 1870s. They built The Dakota, an apartment house at 72nd Street and Central Park West in New York City. This building was completed in 1884 and was the place where John Lennon was shot in 1980.
Alfred was the father of Stephen Carlton Clark and Edward Severin Clark.
In 1856, Clark created the hire-purchase plan, which was the first American installment plan.