In addition to The Naps of Polly Sleepyhead (1906-1907), Peter Newell produced a second newspaper strip, Wishing Willie (or Willy), published in a few papers, e.g. the Atlanta Constitution, between 3 August and 7 September 1913: a grand total of six episodes, so it must not have been very successful.
The strips tell the misadventures of Willy, his sister, and their dog Bob with objects given to them by “Wishbone and Company.”
Here is the first episode:
More Naps of Polly Sleepyhead in full colour; the link above will take you to an almost complete run in b/w on nonsenselit.org.