The drawings collection, for example, isn't large enough to require 7,000 square feet.
"The society has the oldest public collection of drawings in America," she said.
This collection of drawings grew fast and its 2500 leaves are used by researchers even in the present day.
The new museum would also house a major collection of architectural drawings and models.
His collection of pictures and drawings was sold at Amsterdam in 1776.
It is the first major addition to the Clark's drawings collection since its founding.
"Begun in 1981, our drawings collection is young," she said.
The collection of drawings was sold beginning 10 June 1811 in a sale lasting seven days.
His collection of drawings is now in the British Museum.
It has a large collection of prints, drawings, posters and photographs.