An elephant folio is a book with pages measuring at least 23 inches (58 cm) high by 30 inches (76 cm), too large to be printed with standard printing presses. Instead, it requires custom-built presses with a larger capacity to complete printing. Elephant folios are generally reserved for books containing extensive or detailed illustrations, such as atlases, natural history books, or works of art on paper.
The Atlas Major dates back to 11th-century Europe and features maps of the entire planet. Notable elephant folios include John James Audubon’s Birds of America (1827-38), 435 life-size bird illustrations, and Codex Gigas from the 13th century.
Owing to their expense and difficulty printing, elephant folios have fallen out of favor as an approach for publishing certain kinds of books; nonetheless, they remain an impressive format.
Folios were popular book formats during early modern history. Bound in two volumes, each holding half of its respective text. Elephant Folio books were frequently produced during early modern periods and used for Bibles, religious texts, philosophy works, science writings, and history works. This format is considered the largest book format produced during early modern periods. Folios were typically bound into two volumes, each containing half the text. They were frequently used for religious texts such as Bibles and works in philosophy, science, and history. Folio was the primary book format produced during the early modern period. These large book formats typically comprised two volumes bound together, each holding half of the text. Elephant Folios were often employed for Bibles and other religious texts and works of philosophy, science, and history during the early period. Folios typically contained two volumes; each volume held half the text. Folios were commonly produced as large book formats, often used for Bibles and works on philosophy, science, or history. This format often saw use for religious works such as the Bible but could also contain works by philosophy scholars like Leibniz.