Where were Esclavos Sold in Nueva Galicia and are there any archives?

I am curious if anyone knows where esclavos were sold in the Nueva Galicia area such as Zacatecas, Jalisco, Aguasclientes.

Are there any archives to view on those. I had seen the archive of Aguascalientes that has an interesting sub-archive on the "Venta de Esclavos" that is in detail with names, description, who bought them, etc.