In the summer of 1864 he ventured farther, traveling to central Pennsylvania where the Juniata River, a major tributary of the Susquehanna, flows through lush meadows and steep sandstone cliffs. Moran's painting of the valley is filled with closely observed detail: grazing sheep, farm dwellings, distant smoke, a lone traveler, and most remarkably, a foreground vignette of an artist (possibly a self portrait) with a painting on his easel duplicating the scene before the viewer. Completed in September 1864, The Juniata, Evening was purchased—perhaps commissioned—by George Frederick Tyler, a Philadelphia banker and railroad executive. Moran signed and dated the painting in the lower left corner, placing the notation "Op 8" beneath his name. One year earlier he had begun numbering his studio paintings and recording key information about them on an "Opus List." Several pages of Moran's list survive including his notation for ... [https://www.nga.gov/collection/art-object-page.153202.html]