Manuscript sources: 1 | fair copy in Latin, autograph, last frase and signature seems to be written in the same hand as the rest of letter, but with another ink, UUB, H. 154, f. 42-43
| 2 | copy in Latin, 18th-century, BCz, 46 (TN), No. 38, p. 119-122
| 3 | copy in Latin, 18th-century, BCz, 284, No. 52, p. 164-166
| 4 | register with excerpt in Latin, English, 20th-century, CBKUL, R.III, 30, No. 29
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Auxiliary sources: 1 | register in Polish, 20th-century, B. PAU-PAN, 8246 (TK 8), f. 278
| 2 | register in English, 20th-century, CBKUL, R.III, 32, No. 604
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Prints: 1 | DE VOCHT 1961 No. DE, 105, 106, p. 63-64 (English register) |
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