Derek Waters
C.S. Forester (14 eps)
Jason Ritter
Robert Wilson (2 eps)
Colin Hanks
Gordon Cooper (2 eps)
Alia Shawkat
Virginia Hall (1 eps)
Will Ferrell
Roald Dahl (1 eps)
Octavia Spencer
Harriet Tubman (1 eps)
Maestro Harrell
Louis Armstrong (1 eps)
Andre Royo
King Oliver (1 eps)
Jason Momoa
Jean Lafitte (1 eps)
Jack McBrayer
General Andrew Jackson (1 eps)
Maya Rudolph
Griselda Blanco (1 eps)
Johnny Knoxville
Ponce De Leon (1 eps)
Josh Hartnett
Clark Gable (1 eps)
Justin Long
Arno Penzias (1 eps)
Stephen Merchant
F**kin' President Lincoln (1 eps)
Greg Kinnear
Thaddeus Lowe (1 eps)
Christopher Meloni
Othniel Marsh (1 eps)
Tess Lynch
Herself - Storyteller (1 eps)
Mark Proksch
Himself - Storyteller (1 eps)
Jenny Slate
Herself - Storyteller (1 eps)
Jaleel White
Bass Reeves (1 eps)
Kat Dennings
Kentucky Daisey (1 eps)
Ellie Kemper
Nellie Bly (1 eps)
Haley Joel Osment
Kid Blink (1 eps)
Noah Wyle
Thomas Nast (1 eps)
Jason Alexander
William Tweed (1 eps)
Michael Cera
Maurice Cohen (1 eps)
Natasha Leggero
Elizabeth Bisland (1 eps)
Zach Woods
Lee Duncan (1 eps)
Ryan Phillippe
Benjamin Hayes (1 eps)
Giancarlo Esposito
Andrés Pico (1 eps)
Jack Black
William Mulholland (1 eps)
Jason Mantzoukas
Pope (1 eps)
Rob Huebel
Governor Trevino (1 eps)
Patton Oswalt
Mac Brazel (1 eps)
Thomas Lennon
Major Marcel (1 eps)
Parker Posey
Mary Phelps Jacob (1 eps)
Chris Parnell
Thomas Edison (1 eps)
Henry Winkler
Zenas Fisk Wilber (1 eps)
Michael McKean
Carl Laemmle (1 eps)
Sam Rockwell
Bugsy Siegal (1 eps)
Donald Faison
Joe Louis (1 eps)
Dennis Quaid
Lucky Luciano (1 eps)
Paul Scheer
Carl Sagan (1 eps)
Nathan Fillion
Wernher von Braun (1 eps)
Chelsea Peretti
Ann Druyan (1 eps)
Adam Devine
Pavel Belyayev (1 eps)
Blake Anderson
Alexey Leonov (1 eps)
Tony Hale
Edward Cope (1 eps)
