Lorne Greene, Michael Landon, Dan Blocker, and Pernell Roberts in Bonanza (1959)

Michael Landon and Dan Blocker in Bonanza (1959)

Lorne Greene, Dan Blocker, and Pernell Roberts in Bonanza (1959)

"Bonanza" Dan Blocker in "Ponderosa Birdman" 1965

"Bonanza" Dan Blocker, Lorne Greene circa 1964

"Bonanza" Michael Landon, Pernell Roberts, Dan Blocker circa 1964

"Bonanza" Michael Landon, Lorne Greene, Dan Blocker circa 1961

Lorne Greene, Michael Landon, Dan Blocker, and David Canary in Bonanza (1959)

Lorne Greene, Michael Landon, Dan Blocker, David Canary, and Bing Russell in Bonanza (1959)

"Bonanza" Dan Blocker, Michael Landon, Lorne Greene

"Bonanza" Lorne Greene, Michael Landon, Dan Blocker, Mitch Vogel 1971 NBC

Dan Blocker in Rowan & Martin's Laugh-In (1967)

Dan Blocker and Pamela Rodgers in Rowan & Martin's Laugh-In (1967)

Lily Tomlin and Dan Blocker in Rowan & Martin's Laugh-In (1967)

Dan Blocker and Arte Johnson in Rowan & Martin's Laugh-In (1967)

Dan Blocker and Tim Conway in The Tim Conway Comedy Hour (1970)

Dan Blocker and Pernell Roberts in Bonanza (1959)

Dan Blocker, Paul Brinegar, Denver Pyle, Dale Robertson, and Morgan Woodward in Tales of Wells Fargo (1957)

Lorne Greene, Michael Landon, and Dan Blocker in Bonanza (1959)

Michael Landon, Dan Blocker, Laurie Mitchell, Jackie Russell, and Martha Manor in Bonanza (1959)

Lorne Greene, Dan Blocker, Neville Brand, and Pernell Roberts in Bonanza (1959)

Michael Landon, Dan Duryea, and Dan Blocker in Bonanza (1959)