Recurring Guest Characters James Murray 1 guest appearances Lydia Rose Bewley 1 guest appearances James Garfield 1 guest appearances Railway Employee 1 guest appearances Charles Guiteau 1 guest appearances Bill 1 guest appearances Dr. Doctor Bliss 1 guest appearances Alexander Graham Bell 1 guest appearances Charles Sumner Tainter 1 guest appearances Sir Barnes Wallis 1 guest appearances Librarian 1 guest appearances A.R. 'Dick' Collins 1 guest appearances Sir Arthur Harris 1 guest appearances Guy Gibson 1 guest appearances Brian Quinn 1 guest appearances Sal Vulcano 1 guest appearances ⇤ « 5 6 7 8 9 10 11 12 13 14 » ⇥