| Date | Title | Type |
| 1820-01-24 |
Convention with the Ducal Oldenburg Government and the Prince-Bishopric of Lübeck Government in Eutin, concerning the reciprocal extradition of criminals and the abolition of court fees in criminal cases. |
Convention |
| 1820-01-27 |
Circular Rescript, concerning military conscripts accepted by domestic Greenland sailors. |
Circular-Rescript |
| 1820-01-28 |
Circular letter to all apothecaries in the Duchies concerning the examination of apprentices by the physician. |
Circularschreiben |
| 1820-01-29 |
Chancery letter to the Governor, concerning the authorization of residents in cities and guild-privileged market towns to establish factories and manufactures. |
Kanzeleischreiben |
| 1820-02-08 |
Circular to the Post Offices, concerning the correction of some printing errors in the tariff published on April 25, 1818. / Circular to the Post Offices, concerning the dispatch of money with one's own or hired carriage. |
Circular |
| 1820-03-28 |
Circular to the Post Offices, concerning 1) the establishment of a monthly freight post between several cities in Jutland; 2) the dispatch of bank notes and coin by post. |
Circular |
| 1820-05-20 |
Circular to the Post Offices, concerning the transport of letter packets and letters that have arrived at a destination other than the intended one due to an error by a post office. / Circular to the Post Offices, concerning the dispatch of packages by the Schleswig-Holstein Bible Society. |
Circular |
| 1820-06-24 |
Circular to the Post Offices, concerning the dispatch and price of the weekly newspaper Brevduen. Circular to the Post Offices, concerning the tariffing of manuscripts. |
Circular |
| 1820-06-30 |
Royal Resolution, concerning the transport of travelers, couriers, and estafettes between Ulzburg and Bornhöved. |
Royal Resolution |
| 1820-07-01 |
Circular to the Post Offices, concerning the handling of letters to foreign countries that have been returned by foreign post offices. |
Circular |
| 1820-08-04 |
Royal Resolution, concerning the procedure for letters and items found with travelers that are reserved for postal transport. |
Royal Resolution |
| 1820-08-19 |
Circular to the Post Offices, stating that no office fees are to be paid for returned freight mail. Circular to the Post Offices, concerning the establishment of a freight post between Præstø and Stege, as well as the course of freight posts between several places in Jutland etc. |
Circular |
| 1820-08-25 |
Excerpt from a Royal Resolution, concerning the postage exemption granted to the Directorate of the Insane Asylum. |
Excerpt from Royal Resolution |
| 1820-09-09 |
Circular to the Post Offices, concerning the establishment of a new postal route between the Royal States and Norway via Frederikshavn and Fredriksværn. |
Circular |
| 1820-11-21 |
Circular to the Post Offices, concerning the marking of postage in Reichsbankgeld on outgoing letters for postage. |
Circular |
| 1820-12-12 |
Circular to the Post Offices, concerning the payment of postage for letters to the Austrian hereditary states. |
Circular |
| 1820-12-23 |
Circular to the Post Offices, concerning the dispatch and price of the monthly periodical: Læsefrugter, samlede paa Litteraturens Mark. |
Circular |