Hodie si vocem eius audieritis... landscape It was dedicated to the

It was dedicated to the Royal Academy of Sciences of the Institute of France

Even before Wilkes arrived in the Pacific Northwest in 1841

Wilkes spent much of his remaining career overseeing the publications of the expedition

A fine example of early 20th-century cartographic design

Hodie si vocem eius audieritis... landscape It was dedicated to theSixteenth Century Gregorian Chant Antiphonals Ink on vellum, with decorative rubrication and illuminated initials Psalms and Penitential Chants Hodie si vocem eius audieritis Translation: Today, if you hear his voice, harden not your hearts From Psalm 94, used in Lenten Matins. Listen on YouTube Framed size: 27 x 22