It seems the index was incomplete. From [a link from inside https://icolombina.es/ https://icolombina.es/ that doesn't work if there isn't a session, I removed

It seems the index was incomplete. From [a link from inside https://icolombina.es/ https://icolombina.es/ that doesn't work if there isn't a session, I removed it]: Of 3500 epítomes that were mentioned in Memorial al Emperador (report for the Emperor) Biblioteca Colombina keeps the following numbers: 509-576 (h.1r.-24v.), 697 (incomplete beginning)- 723 (incomplete ending) (h. 25r.-42v.), 881 (incomplete beginning)-956 (h. 43r.-74v), 957-1207 (h. 75r.-180v.), 1208- start of 1258 (h. 181r.-202v.), final of 1258-1316 (h. 203r.-227v.), 1317-1364 (incomplete ending) (h. 228r.-252v.), 1412-1550 (incomplete ending) (h. 253r.-516v.), 1576-1605 (incomplete ending), 1989 (incomplete begining)-2024 (incomplete ending?) (h. 527r.-538v.), 2183-2205 (h. 539r.-550v.), 3107-3130 (incomplete ending?) (h. 551r.-562v.) Also in http://www.icolombina.es/colombina/bibliograficos.htm http://www.icolombina.es/colombina/bibliograficos.htm there's a more complete story of copies and how they tried to create a systematic index... as an example, you can read a reference to 1635 books of the collection that were lost when a ship sunk from Venice to Seville. The part in Seville was recorded in microfilm years ago and it's possible to consult there. It doesn't seem to be online.