Jan Keene Muhlert oversaw an aggressive acquisitions program that brought works by William Merritt Chase (1849–1916), Thomas Cole (1801–1848), Arthur Dove (1880–1946), Childe Hassam (1859–1935), and David Johnson (1827–1908) into the collection, crowned by the acquisition in 1990 of "Swimming" by Thomas Eakins (1844–1916). The purchase of the Eakins masterpiece required a capital campaign to raise ten million dollars and drew on every resource available to Muhlert. Dr. Rick Stewart, Muhlert’s successor, is a nationally recognized scholar on the work of Frederic Remington and Charles M. Russell. During his tenure as director, Dr. Stewart added major works to the museum’s collection by Stuart Davis (1892–1964), Marsden Hartley (1877–1943), and John Singer Sargent (1856–1925). Stewart oversaw the challenging, two-year closure during which two previous expansions and the museum’s physical plant were demolished. In their place a much larger facility was erected, culminating in a grand reopening in 2001. When Dr. Stewart stepped down as director, he was named the museum’s senior curator of western painting and sculpture.