Alejandro de Quesada is a Florida-based military history writer, an experienced researcher and collector of militaria, photos and documents and runs an archive as a secondary business, with a strong Hispanic-American content. He has written 12 books and over 50 articles, including for Osprey Elite 137 The Mexican Revolution 1910–20. He is a leading authority on Spanish-American subjects.Stephen Walsh studied art at the North East Wales Institute and has worked as a professional illustrator since 1988. Since then he has illustrated a variety of books and games including Settlers of Catan.