 Complete the following phrase:  Charles Willson Peale 17411827 received his inspiration for a public museum in 1783 while illustrating mastodon fossils belonging to Dr. John Morgan. Once he had conceived the idea for an American museum of natural history, Peale opened a museum to the public in Philadelphia on July 18, 1786. In 1810, Peale retired from his work with the museum, leaving its management and responsibility to his sons. Later in 1814, a museum was established at 225 North Holliday Street between East Saratoga and East Lexington streets in Baltimore by Rembrandt Peale 17781860, the second son of Charles Willson Peale. It was dubbed as Peales Baltimore Museum and Gallery of Fine Arts and featured portraits of famous Americans many by the founder and the complete skeleton of a prehistoric mastodon exhumed by C.W. Peale in 1801. During the 