The Portuguese Montante
Eric Myers and Steve Hick have very generously provided an English translation of Dom Diogo Gomes de Figueiredo’s work on the use of the montante, the two-handed sword native to Spain and Portugal. Highly recommended!
You can download it here for free:
Memorial of the Practice of the Montante
Arms & Armor in the United States are producing a very nice montante trainer that shows the general form of this style of sword:
Arms & Armor Montante Trainer
There is also more information on the montante (in Spanish) here:
La Asociación Española de Esgrima Antigua