| Author | Title | Publication | Date | Pages | Comments |
| anon | Marcas de | Revista del Centro | 1977 | 20-22 | Stampless markings |
| Correspondencia de | Filatelico |
| anon | Marcas de | Revista del Centro | #27 | 20 | Stampless markings |
| Correspondencia de | Filatelico |
| anon | Markenfaelschungen | Vertrauliches | Nov 1911 | 149 | Counterfeits |
| in Paraguay | Korrespondenz Blatt |
| anon | Markenfälschungen | Vertrauliches | Nov 1911 | 149 | Arrest in Paraguay |
| in Paraguay | Korrespondenz-Blatt | for counterfeiting |
| anon | Miscellaneous | L'Union Postale | 1881 | Paraguay joins UPU |
| 1 Jul 1881 |
| anon | New Airmail Route | Airpost Journal, The | Nov 1930 | 4 | Airmail route |
| in South America |
| anon | Nueva Emision de | Revista de la | 132 | Quantities issued |
| Estampillas Fiscales | Sociedad Filatelica |
| anon | Nueva Emision de | Revista de la | 132 | Quantities issued |
| Estampillas Fiscales | Sociedad Filatelica |
| anon | Origenes del Papel | Revista Filatelica | 18 | Stamped Revenue |
| Sellado | Paraguaya | Paper |
| anon | Paragauy | Illustriertes | Sep 6, 1930 | 275 | Quantities issued |
| Briefmarken Journal |
| anon | Paragauy - | American Journal of | Oct 31, 1894 | 464 | Counterfeits & |
| Counterfeits | Philately | Bogus |
| anon | Paragauy - Los falsos | Chile Filatelico | Jun 1964 | 101-102 | Counterfeit |
| tipo "Catedral" |
| anon | Paraguay | Air Mail Collector, | Jul 1930 | 46 | Date of issue, |
| The | Printer |
| anon | Paraguay | Air Mail Collector, | Dec 1929 | 6 | Quantities issued |
| The |
| anon | Paraguay | Air Mail Collector, | Sep 1929 | 22 | Quantities issued |
| The |
| anon | Paraguay | Air Mail Collector, | Nov 1929 | 12 | Airmail routes |
| The |
| anon | Paraguay | Air Mail Notes and | Sep 1930 | IV | Mermoz flight |
| News |
| anon | Paraguay | Airpost Journal | Feb 1936 | 9 | Quantities issued |
| anon | Paraguay | Airpost Journal | Jul 1930 | 11 | Quantities issued |
| anon | Paraguay | Airpost Journal | Jun 1936 | 25 | Variety |
| anon | Paraguay | Airpost Journal, The | Oct 1933 | 14 | Variety of Zepp |
| anon | Paraguay | Airpost Journal, The | Jan 1933 | 9 | Variety |
| anon | Paraguay | Airpost Journal, The | Dec 1931 | 13 | Quantities issued |
| anon | Paraguay | Airpost Journal, The | Nov 1936 | 19 | Quantities issued |
| anon | Paraguay | Airpost Journal, The | Mar 1930 | 16 | Quantities issued |
| anon | Paraguay | American Air Mail | 201 | Early Flights |
| Catalog Vol 1 |
| anon | Paraguay | American Airmail | 1974 | 201 | Flights |
| Catalouge BOOK |
| anon | Paraguay | American Journal of | Oct 20, 1870 | 120 | Notes 1st Issue |
| Philaately (The) |
| anon | Paraguay | American Journal of | Aug 15, 1890 | 319 | Receipt of 1886 |
| Philately | provisional |
| anon | Paraguay | American Journal of | Oct 28, 1905 | 381 | Uncatalogued |
| Philately | official - Oficial in |
| Saturday, February 19, 2000 | Page 3 of 42 |