I finally gave up trying to buy a copy. Even though it is a very recent book, it seems there are no copies to buy. But I did find copies to obtain on inter-library loan and did copy the index page that happens to also include SERRANO entries:
For some reason, they are in two separate groups in the index, as follows:
Serrano, Alonso - 1351
----- Bachiller Anton - 2348
----- Cristobal - 2353
----- Diego - 2355
Serrano, Lcdo. Antonio - 2352
----- Lcdo. Cristobal - 2354
I obtained it via inter-library loan after finding several libraries via WorldCat, where it is at:
http://www.worldcat.org/title/pasajeros-a-la-espanola-1492-1...You can obtain it and look up these references. They are grouped by towns, with the vast majority in Santo Domingo. Some entries are minimal. Some are a whole paragraph or more.