This article expands on the ONA Educational Symposium talk from the 2021 Convention. This article begins the exploration of the Frontier Series which first entered circulation in 2011. Symbolism found on the $50 and $100 denominations is highlighted. Collectors are introduced to printer varieties.

Published as "In Search of Bill: The 'Frontiers' Series" in The Ontario Numismatist, Volume 62, May-June 2023, pages 78-79 & 81, by the Ontario Numismatic Association.