| Author | Title | Publication | Date | Pages | Comments |
| anon | Paraguay | Illustriertes | Jan 3, 1905 | 231 | Notes 2 types of 1c |
| Briefmarken Journal | of 1884 |
| anon | Paraguay | Illustriertes | Feb 1, 1937 | 52 | Date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Feb 1, 1930 | 44 | Date of issue, sheet |
| Briefmarken Journal | layout |
| anon | Paraguay | Illustriertes | Apr 19, 1902 | 158 | Notes 1c pays |
| Briefmarken Journal | printed matter rate |
| anon | Paraguay | Illustriertes | Sep 12, 1908 | 427 | Notes 2 perf |
| Briefmarken Journal | varieties of the |
| anon | Paraguay | Illustriertes | Aug 21, 1909 | 38 | Variety of postal |
| Briefmarken Journal | card |
| anon | Paraguay | Illustriertes | Sep 1, 1937 | 312 | Date of Issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Oct 16, 1937 | 366 | Quantities of |
| Briefmarken Journal | stamps issued |
| anon | Paraguay | Illustriertes | Oct 16, 1937 | 369 | Quantities of |
| Briefmarken Journal | stamps issued |
| anon | Paraguay | Illustriertes | Oct 15, 1898 | Quantity of 10c on |
| Briefmarken Journal | 40c |
| anon | Paraguay | Illustriertes | Apr 1, 1899 | Quantity of 10c on |
| Briefmarken Journal | 15c provisional |
| anon | Paraguay | Illustriertes | Feb 23, 1901 | 68-69 | Details on |
| Briefmarken Journal | Telegraph |
| anon | Paraguay | Illustriertes | Jun 8, 1901 | 193 | Quantities |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Jan 4, 1936 | 12-13 | Date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | May 16, 1908 | 231 | Date of issue & |
| Briefmarken Journal | quantities |
| anon | Paraguay | Illustriertes | Mar 15, 1902 | 118 | Date of issue, size |
| Briefmarken Journal | of sheet |
| anon | Paraguay | Illustriertes | Aug 20, 1887 | 204 | Notes postal |
| Briefmarken Journal | stationery for 1887 |
| anon | Paraguay | Illustriertes | Apr 15, 1933 | 125 | Decree & quantities |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | May 3, 1919 | 235 | Decree, date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Aug 2, 1913 | 394 | Quantities issued |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Jan 7, 1922 | 15 | Notes 5c on 1c is |
| Briefmarken Journal | fake & quantities |
| anon | Paraguay | Illustriertes | Jun 25, 1921 | 186 | Date of issue of 50c |
| Briefmarken Journal | on 75c |
| anon | Paraguay | Illustriertes | Apr 21, 1934 | 127 | Printer |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Feb 1, 1933 | 44 | Date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Jun 11, 1921 | 170 | Date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Feb 16, 1935 | 60 | Time of issue - |
| Briefmarken Journal | Official |
| anon | Paraguay | Illustriertes | Oct 15, 1933 | 319 | Quantities issued |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Apr 22, 1922 | 122 | Date of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Feb 1, 1908 | 69 | Dates of issue |
| Briefmarken Journal |
| anon | Paraguay | Illustriertes | Sep 1, 1923 | 261 | Varieties |
| Briefmarken Journal |
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