The Flying serpent, or, Strange news out of Essex [electronic resource] : being a true relation of a monstrous serpent which hath divers times been seen at a parish called Henham on the Mount within four miles of Saffron-Walden : showing the length, proportion and bigness of the serpent, the place where it commonly lurks, and what means hath been used to kill it : also a discourse of other serpents, and particularly of a cockatrice killed at Saffron-Walden / the truth of thi[s] relation of the serpent is attested, by [brace] Richard Jackson ... [et al.]