He practiced plein air painting in southern France and at Moret-sur-Loing, where he met the English Impressionist Alfred Sisley.
In 1911, Ernest Lawson, an Impressionist painter, persuaded Lever to move to America, saying he would have greater success there.
Ernest Hemingway | Ernest Shackleton | Lawson | Ernest Borgnine | Henry Lawson | Ernest Tubb | Ernest Rutherford | Ernest Renan | Lawson (band) | Ernest Chausson | Ernest Bloch | Ernest Bevin | Ernest | Ernest George | Nigella Lawson | Ernest Gruening | Ernest Dowson | Ernest Bai Koroma | Ernest Thompson Seton | Ernest Hollings | Doyle Lawson | Dave Lawson | William Ernest, Duke of Saxe-Weimar | John Ernest | Ernest Thayer | Ernest Jones | Ernest Giles | Ernest Gellner | Ernest Fenollosa | Ernest Augustus I of Hanover |
Among the artists who first visited Cos Cob as summer students were Elmer Livingston MacRae, Ernest Lawson, Allen Tucker, Charles Ebert, Mary Roberts Ebert, Alice Judson, and Genjiro Yeto.