Saya mau tau Catatan dari Eastman Johnson. Jelaskan dalam bahasa melayu

Hills, Patricia, Eastman Johnson, New York: Clarkson N. Potter, Inc. 1972,

[http://libmma.contentdm.oclc.org/cdm/compoundobject/collection/p15324coll10/id/56268/rec/16 Art and the Empire City: New York, 1825–1861], an exhibition catalog from the Metropolitan Museum of Art (fully available online as PDF), which contains material on Eastman Johnson (see index)