Credited with early propagation of the Washington Navel from the Riverside lineage as commercial interest in the cultivar expanded.
UCR reports that fruit from the Riverside navel lineage received first prize at a Riverside citrus fair in 1879. It credits Thomas W. Cover as an early propagator. The source does not call this the first Riverside citrus fair or state that the prize caused a quantified rise in budwood demand.
World of Citrus