The
UST Baybayin documents cover two legal real estate transactions in 1613 (labelled as
Document A dated February 15, 1613) and 1625 (labelled as Document B dated December 4, 1625) which are the "longest and most complete documents completely handwritten in
baybayin". They are also the oldest known deeds of sale for land in the Philippines during the Spanish colonization. When Capiit died sometime between 1613 and 1625, Longar was remarried to Don Luis Castilla, who sold some lands to the University of Santo Tomas in 1629. When the ownership of Castilla was contested in court, he showed
Documents A and
B as proof of ownership. Since the university already acquired the land, the deeds of sale were later transferred into the university's custody. The baybayin documents were first shown in the public during the tercentenary of the university in 1911. That same year, the documents were first published in
Libertas, a daily newspaper published by the university. ==Management==