| R. A–L | R–(A–L) |
| R. Afghanistan | R–AFG |
| R. Africa | R–AFR |
| R. Arabia | R–ARA |
| R. Austria –1899 & earlier | R–AUS–18 |
| R. Austria–Hungary | R–AUST |
| R. Austria–Hungary — Elisabeth | R–AUST–Eli |
| R. Austria–Hungary — Franz Joseph I | R–AUST–Fra |
| R. Austria–Hungary — Karl Franz Joseph | R–AUST–Kar |
| R. Bavaria | R–BAV |
| R. Belgium | R–BEL |
| R. Belgium — Albert I | R–BEL–Alb |
| R. Belgium — Leopold I–III | R–BEL–Leo |
| R. Bohemia | R–BOH |
| R. Brazil | R–BRA |
| R. Bulgaria | R–BUL |
| R. Cambodia | R–CAM |
| R. China | R–CHI |
| R. Denmark | R–DEN |
| R. Denmark — Christian IX–X | R–DEN–Chr |
| R. Denmark — Frederick VIII–IX | R–DEN–Fre |
| R. Egypt (Modern) | R–EGY |
| R. England — 1899 & earlier | R–ENG–18 |
| R. England — 1900s | R–ENG–19 |
| R. England — 2000s | R–ENG–20 |
| R. England — A–Z | R–ENG–(A–Z) |
| R. England — Albert, Prince Consort | R–ENG–Alb |
| R. England — Alexandra, Queen | R–ENG–Ale |
| R. England — Alfred the Great | R–ENG–Alf |
| R. England — Anne, Queen | R–ENG–Ann |
| R. England — Arthur | R–ENG–Art |
| R. England — Charles | R–ENG–Cha |
| R. England — Charles I | R–ENG–Cha 1 |
| R. England — Charles II | R–ENG–Cha 2 |
| R. England — Charts | R–ENG–Char |
| R. England — Diana | R–ENG–Dia |
| R. England — Edward I–VI | R–ENG–Edw 1 |
| R. England — Edward VII | R–ENG–Edw 7 |
| R. England — Edward VIII | R–ENG–Edw 8 |
| R. England — Elizabeth I | R–ENG–Eli 1 |
| R. England — Elizabeth II | R–ENG–Eli 2 |
| R. England — George I–II | R–ENG–Geo 1 |
| R. England — George III | R–ENG–Geo 3 |
| R. England — George IV | R–ENG–Geo 4 |
| R. England — George V | R–ENG–Geo 5 |
| R. England — George VI | R–ENG–Geo 6 |
| R. England — Grey, Jane | R–ENG–Gre |
| R. England — Henry I–VII | R–ENG–Hen 1 |
| R. England — Henry VIII | R–ENG–Hen 8 |
| R. England — Henry VIII–Wives | R–ENG–Hen 8–Wiv |
| R. England — James I–II | R–ENG–Jam 1 |
| R. England — John | R–ENG–Joh |
| R. England — Mary I–III | R–ENG–Mar 1 |
| R. England — Mary of Teck | R–ENG–Mar T |
| R. England — Philip | R–ENG–Phi |
| R. England — Richard I–III | R–ENG–Ric 1 |
| R. England — Stuart, Charles Edward | R–ENG–Stu C |
| R. England — Stuart, James Francis Edward | R–ENG–Stu J |
| R. England — Victoria | R–ENG–Vic |
| R. England — William I–IV | R–ENG–Wil 1 |
| R. France — 1699 & earlier | R–FRA–16 |
| R. France — 1700s–1900s | R–FRA–17 |
| R. France — A–Z | R–FRA–(A–Z) |
| R. France — Anne of Brittany | R–FRA–Ann |
| R. France — Catherine de Medici | R–FRA–Cat |
| R. France — Charlemagne | R–FRA–Cha |
| R. France — Charles II–X | R–FRA–Char 2 |
| R. France — Clovis I–III | R–FRA–Clo |
| R. France — Eugenie, Empress | R–FRA–Eug |
| R. France — Francis I–II | R–FRA–Fra 1 |
| R. France — Henry I–IV | R–FRA–Hen 1 |
| R. France — Jean II | R–FRA–Jea 2 |
| R. France — Josephine, Empress | R–FRA–Jos |
| R. France — Louis I–XIII | R–FRA–Lou 1 |
| R. France — Louis XIV | R–FRA–Lou 14 |
| R. France — Louis XV | R–FRA–Lou 15 |
| R. France — Louis XVI | R–FRA–Lou 16 |
| R. France — Louis XVII–XVIII | R–FRA–Lou 17 |
| R. France — Louis Philippe | R–FRA–Lou P |
| R. France — Marie Antoinette | R–FRA–Mar A |
| R. France — Marie de Medici | R–FRA–Mar M |
| R. France — Marie Louise of Austria | R–FRA–Mari L |
| R. France — Napoleon I | R–FRA–Nap 1 |
| R. France — Napoleon II | R–FRA–Nap 2 |
| R. France — Napoleon III | R–FRA–Nap 3 |
| R. France — Philippe I–VI | R–FRA–Phi |
| R. Germany — 1899 & earlier | R–GER–18 |
| R. Germany — 1900s | R–GER–19 |
| R. Germany — A–Z | R–GER–(A–Z) |
| R. Germany — Charles IV–VI | R–GER–Cha |
| R. Germany — Frederick I–III | R–GER–Fre |
| R. Germany — Frederick William I–IV | R–GER–Fre W |
| R. Germany — Henry I–VII | R–GER–Hen |
| R. Germany — Mazimilian I–II | R–GER–Max |
| R. Germany — Wilhelm I–II | R–GER–Wil |
| R. Greece | R–GRE |
| R. Hawaii | R–HAW |
| R. Huungary | R–HUN |
| R. India | R–IND |
| R. Iran | R–IRAN |
| R. Iraq | R–IRAQ |
| R.Italy | R–ITA |
| R.Italy — Umberto I–II | R–ITA–Umb |
| R.Italy — Victor Emmanuel II–III | R–ITA–Vic |
| R. Japan | R–JAP |
| R. Japan — 1900s | R–JAP–19 |
| R. Japan — 2000s | R–JAP–20 |
| R. Japan — Hirohito | R–JAP–Hir |
| R. Jordan | R–JOR |
| R. M–Z | R–(M–Z) |
| R. Mexico | R–MEX |
| R. Monaco | R–MONA |
| R. Montenegro | R–MONT |
| R. Morocco | R–MOR |
| R. Naples | R–NAP |
| R. Netherlands | R–NET |
| R. Netherlands — 1900s | R–NET–19 |
| R. Netherlands — 2000s | R–NET–20 |
| R. Netherlands — Juliana | R–NET–Jul |
| R. Netherlands — Wilhelmina | R–NET–Wil |
| R. Norway | R–NOR |
| R. Poland | R–POL |
| R. Portugal | R–POR |
| R. Rumania | R–RUM |
| R. Rumania — Carol II | R–RUM–Car |
| R. Rumania — Ferdinand I | R–RUM–Fer |
| R. Rumania — Marie | R–RUM–Mar |
| R. Russia — 1899 & earlier | R–RUS–18 |
| R. Russia — 1900s | R–RUS–19 |
| R. Russia — A–Z | R–RUS–(A–Z) |
| R. Russia — Alexander I–III | R–RUS–Ale |
| R. Russia — Catherine I–II | R–RUS–Cat |
| R. Russia — Ivan III–VI | R–RUS–Iva |
| R. Russia — Nicholas I–II | R–RUS–Nic |
| R. Russia — Paul I | R–RUS–Pau |
| R. Russia — Peter I–III | R–RUS–Pet |
| R. Scotland | R–SCO |
| R. Scotland — Mary, Queen of Scots | R–SCO–Mar |
| R. Serbia | R–SER |
| R. Spain | R–SPA |
| R. Spain — 1900s | R–SPA–19 |
| R. Spain — 2000s | R–SPA–20 |
| R. Spain — Alfonso XII–XIII | R–SPA–Alf |
| R. Spain — Ferdinand I–VII | R–SPA–Fer |
| R. Spain — Juan Carlos | R–SPA–Jua |
| R. Spain — Philip I–V | R–SPA–Phi |
| R. Sweden | R–SWE |
| R. Sweden — 1900s | R–SWE–19 |
| R. Sweden — 2000s | R–SWE–20 |
| R. Sweden — Charles VII–XV | R–SWE–Cha |
| R. Sweden — Gustavus I–VI | R–SWE–Gus |
| R. Thailand | R–THA |
| R. Turkey | R–TUR |
| R. Yugoslavia | R–YUG |
| R. Yugoslavia — Alexander I | R–YUG–Ale |
| R. Yugoslavia — Peter II | R–YUG–Pet |
