(815 ILCS 115/2) (from Ch. 17, par. 606)
    Sec. 2. Persons severally liable upon bills of exchange or promissory notes, payable in money, may all or any of them severally be included in the same suit at the option of the plaintiff, and judgment rendered in said suit shall be without prejudice to the rights of the several defendants as between themselves.
(Source: Laws 1895, p. 262.)