In 2013 the Smithsonian Herpetological Information Service published the Reptiles of Cuba:
Checklist and Geographic Distributions by Lourdes Rodríguez Schettino, Carlos A. Mancina & Vilma Rivalta González. It has detailed distribution maps and localities for all the Cuban reptiles and is a great piece of work but its not a Field Guide. It is available as a downloadable pdf which is the best way for Cubans since the purchase cost of a hardback copy is prohibitive to most. The distribution map for Anolis loysiana Spiny Anole shows that it is widespread and I've taken the liberty of copying it below.