"Color book#World War I" . . "Color book" . . . . "United Kingdom" . . "Papal States" . . . . . . . . "Ottoman Empire" . . "Holy Roman Empire" . . "Color book" . . . . "Color book#Belgian Gray Books" . "Color book#Austrian Red Book" . "color book" . "Color book#Russian Orange Book" . . "Color book#French Yellow Book" . . "Color book#Color books" . . "Color book#British Blue Book" .