These topographic street maps of Asunción were produced, in two parts, by the Army Map Service of the United States in 1968.
They are extremely detailed, and designed both for reference and navigation. All roads and important establishments (such as hotels, banks, schools, and government facilities) are cross-referenced to indexes. Vegetation types are distinguished, and contours depicted every 10 metres.
Asunción 1 
Asunción 2
Additional maps of Asunción and five more cities in Paraguay are available from TROPICARTA (requires Chomikuj account).