Translation / modern text
The letter discusses the relationship with the recipient; readable words include “WMM Panu”, “afekcie” (affection), and the Latin “Votis”. The dateline gives Warsaw, 24 February 1702. Page 52 is the address wrapper to the Palatine/Voivode of the Ruthenian lands.
Original wording — transcription
[Nagłówek:] Monseigneur.
[…] WMM Panu […]
[…] afekcie […] Votis […] [dalszy tekst częściowo nieczytelny].
[Datownik:] w Warszawie d. 24 Febr 1702.
[Adres na obwolucie, s. 52:] A Son Excellence Monseigneur le Palatin General de Russie à Leopoli.
Reading notes
Page 51 contains the letter text; p. 52 is its folded address wrapper, not a separate letter. Date and place are read from the dateline on p. 51.