Manuscript sources: 1 | office copy in Latin, in secretary's hand, handwriting at end of letter is smaller and looks slightly diffrent, possibly because of pen change, UUB, H. 155, f. 213r
| 2 | copy in Latin, 20th-century, B. PAU-PAN, 8242 (TK 4), a.1530, f. 7
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Auxiliary sources: 1 | register in English, 20th-century, CBKUL, R.III, 30, No. 197
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