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| Library of the Anti-Trinitarians original: "Bibliotheca Anti-Trinitariorum." This is a famous bibliographic work by Christopher Sandius listing authors who rejected the Trinity. | Page 1 |
| Jan Stoiński's Summary History of the Origin of the Unitarians in Poland. | 181 |
| Jerzy Szoman’s Last Will and Testament: containing a brief history of his own life, as well as various Church Acts. | 189 |
| Concerning the Printing Houses of the Unitarians in Poland. Typographiis; the specialized workshops where books were printed, which were essential for spreading dissenting religious ideas. | 199 |
| A Brief Account regarding the martyrdom of Jan Tyszkiewicz. Tyszkiewicz was a town citizen of Bielsk who was executed in 1611 for his Unitarian faith, becoming a prominent martyr for the movement. | 203 |
| Andrzej Wiszowaty’s concise narrative of how the Unitarian Christians in Poland were separated from the Reformed Trinitarians. Unitarii; Christians who believe God is one person, rejecting the doctrine of the Trinity. | 207 |
| Includes the History of the Spirit of the Belgian. original: "Spiritu Belgæ." This likely refers to a specific theological dispute or a personification of certain Dutch/Belgian theological trends. | 216 |
| An anonymous Letter presenting a short history of the life and death of Andrzej Wiszowaty, as well as of the Unitarian Churches in his time. | 219 |
| A Defense for the religious freedom of the Unitarians in Poland, written by a Polish Knight. Equite Polono; a member of the Polish nobility. This was a common pseudonym for Unitarian authors, often specifically Janusz Przypkowski. | 265 |