Bonanza Tahoe-based "Ponderosa" theme park from 1967–2004; a line of American Character action figures in 1966–1967; Aladdin lunch buckets and thermos bottles in 1966–1968; View Master slide sets in 1964, 1971; Ponderosa tin cups from 1967–2004; a series of Hamilton collector plates in 1989–1990; and most recently, Breyer Fiftieth Anniversary Ponderosa Stable sets, with horses and Cartwright figures in 2009–2011. Fourteen "Bonanza" novels have been published: "Bonanza: A Novel" by Noel Loomis (1960); "Bonanza: One Man With Courage" by Thomas Thompson (1966); "Bonanza: Killer Lion" by Steve Frazee (1966); "Bonanza: Treachery Trail" by Harry Whittington (1968); "Winter Grass" by Dean Owen
Movie ranch evenly split between movies and television episodes, were filmed at the ranch during its peak years. The long-running TV western "The Virginian" filmed on location at Iverson in the ranch's later period, as did "Bonanza" and "Gunsmoke." By the 1960s, the ownership of the ranch was split between two of Karl and Augusta's sons, with Joe Iverson, an African safari hunter married to Iva Iverson, owning the southern half of the ranch (the Lower Iverson) and Aaron Iverson, a farmer married to Bessie Iverson, owning the northern half (the Upper Iverson). In the mid-1960s the state of California began construction