Cristóbal de Acuña, Nuevo descubrimiento del gran rio de las Amazonas (Madrid, 1641)

A Jesuit sent by royal provision of the Audiencia of Quito came down the whole Amazon in 1639 with a Portuguese armada and printed the survey two years later: the tributaries, the peoples named one by one, a cold site measured against wheat-growing. The same sheets print what the voyage was also being used for. Number LXVII is Acuña's own formal protest against the slave-taking his escort intended, and number LII refuses the pretext offered for it.