The source Google book collects the two works by Dom Duarte:

• Leal conselheiro
• Livro da ensinança de bem cavalgar toda sella (known as "Bem cavalgar")

written into the first half of XV centuriy, as transcripted from the original manuscript and printed by Rollandiana, 1843.

This djvu file contains Bem cavalgar only (Leal Conselhero will be uploaded into another file). Bem cavalgar is probably the most important document about medioeval horsemanship.

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