My family goes to Puerto Rico every year at the beginning of January to ward off Seasonal Affective Disorder. The cookbook I've used there for years is by Yvonne Ortiz (no relation to Elizabeth Lambert Ortiz), and it's called A Taste of Puerto Rico. We wouldn't know we were in Puerto Rico without her sancocho.
This year my daughter gave me a copy of Angela Spenceley's A Taste of Puerto Rico. The publisher is Coconut Press, P.O. Box 309540, St. Thomas, Virgin Islands 00803. There are some negative comments on Amazon about the book but they seem to refer to a 32-page pamphlet by Spenceley published by Caribbean Publishing. The full-length book is 380 pages long. As is typical with small-press books, the indexing and cross-reference are not strong, but the book itself is warm, generous, and true to the flavors I've learned to love in Puerto Rico over the last ... golly ... 20 years. I'll cheerfully pack it up with Ortiz for next year's trip.