WASHINGTON (AP).- Two farm boys rest in a field, a quiet moment emblematic of 19th century rural America, brings nostalgia via a new 44-cent postage stamp being released Thursday. The stamp, the latest in the Postal Service’s American Treasures series, features Winslow Homer’s 1874 painting “Boys in a Pasture,” on display at Boston’s Museum of Fine Arts. Homer’s work largely focuses on landscapes and scenes of American life. First day of issue ceremonies for the stamp are being held at the American Philatelic Society StampShow 2010 in Richmond, Va. It’s Homer’s third time on a U.S. postage stamp. The first was in 1962, featuring “Breezing Up (A Fair Wind),” a painting of a man and three boys sailing. In 1998 a stamp carried his painting “The Fog Warning.” Winslow Homer (1836-1910) is considered one of the greatest American painters of the 19th century. Born in Boston, Massachusetts, he began a two-year apprenticeship in a lithography shop at the age of 19 and afterwards became a