M. Georgii Andreæ Helwings, [...] Lithographia Angerburgica : Sive Lapidum Et Fossilium, In Districtu Angerburgensi & ejus vicinia [...] collectorum brevis & succincta Consideratio [...]. [P. 1]. - Helwing, Jerzy Andrzej (1666-1748) (Literis Johannis Stelteri, 1717)