Around this time, Maier published an extremely limited print run of De Medicina Regia et vere Heroica, Coelidonia (1609), including in it his autobiography.

He was also a guest of Christoph Reinhard, Doctor of Laws and town syndic of Mühlhausen, to whom he later dedicated his book Atalanta Fugiens.

His first well-known book, Arcana arcanissima, was published in London in 1613 or 1614, originally dedicated to the head of the Royal College of Physicians at that time, William Paddy.

[8] He also personally dedicated copies to a number of notables, including the Bishop of Ely and Sir Thomas Smith of the East India Company.

In 1620, he moved to Magdeburg to practice medicine, where he died at the age of 54, leaving a noteworthy quantity of unpublished works.

[13] Ashmole, they said, began to learn seal engraving, casting in sand, and goldsmith's work when living in Blackfriars, London, at which time he was initiated into Rosicrucian "secrets" by William Backhouse of Swallowfield in Berkshire.

James Brown Craven, who gave detailed descriptions of the works above in his catalogue raisonné (1910) of Michael Maier, also included the 1654 English translation of Lusus Serius: or, Serious Passtime.

The copy from the Bodleian Library described by Craven[15] was dedicated "To the Honourable Cary Dillon, Esq., Son to Robert, late Earle of Roscommon by J. de la Salle" [i.e., John Hall of Durham].

This is a fair example of the intellectual circle in which Maier's work circulated contemporary with the association of Rosie Cross with Elias Ashmole.