This format was published between 1898 and 1902. Because of their age, dust jackets for these books are difficult to find. The front of the jackets are plain without colors and match the line drawn pictures on the front of the books.

The back of the dust jackets have a list of the books in this series. I have seen seven variants up to this time.

Shown here are earlier dust jackets that list 22 (1898), 26 (early 1899), 29 (later-1899) and 31 books (probably early 1900).

Here are three dust jackets that have the Henry Altemus Company imprint: the numbering on these dust jackets changed after #30. The earliest of these lists Great Sea Fights as #31 and Wonder Book as #58. (1900)

The next Dust jacket ends with #55 Josephine. (Early 1902). The last Format 2 book has #58 as Animal Stories for Little People. (Later 1902)