In June 1986, he started his notary's office in his hometown
Sokółka, in
Podlaskie Voivodeship in northeastern Poland.[1][2][4][5][6] Between 1997 and 2000 he was the secretary of the
National Council of Notaries [
pl] in
Warsaw (Polish: Krajowa Rada Notarialna).[1][2][7] Between 1999 and 2004, he was the secretary of the Council of the Notary Science Center Foundation (Polish: Fundacja Centrum Naukowe Notariatu), established by the National Council of Notaries in order to support and conduct scientific and research works in the field of law, also in Warsaw.[1][2][8] Until mid-2012, he was a member of the foundation's Council.[1][2]
He has published several dozen articles in the field of civil, economic, notary and foundation law in legal
journals, including the monthly Rejent [
pl] and Nowy Przegląd Notarialny.[1][2][9] Since 2013, he has been a regular collaborator of the literary and cultural quarterly Znad Wilii [
pl], published in
Vilnius.[10][11][12] Together with his wife, Helena Drożdżewicz, he published two booklets in Polish: Sokólski Brueghel – Witalis Sarosiek (1945–2012; 2013)[13] and Antologia Doliny Łosośny: jak pieśń żurawia nad wiekowymi wiązami (2019).[14] He also published a chapter in the book Historia, tradycja, pamięć: prace ofiarowane Profesorowi Józefowi Maroszkowi w siedemdziesiątą rocznicę urodzin (2020).[15]
Since 2016, together with his cousin Wiktoria Tołłoczko-Tur, he has been organizing an annual international open-air painting workshop In the Valley of Lasosna in
Puciłki on the
Lasosna[16][17][18][19][20][21][22] (Polish: W dolinie Łosośny; the first pilot plein-air took place in 2014),[23] which takes place in the summer house of Leonard and Helena Drożdżewicz. Leonard Drożdżewicz inherited this house with farm buildings, land and a pond nearby from his parents, and then renovated it as a pre-war summer resort.[17]
Awards
Honorary badge “For Merits for the Notary Self-Government of the Republic of Poland” awarded by the
National Council of Notaries [
pl] (9 October 1999);[1][2]
^Drożdżewicz, Leonard (July–August 2003).
"Centrum Naukowe Notariatu"(PDF). Rejent (in Polish). Year 13, issue 7–8 (147–148): 247. Archived from
the original(PDF) on 6 September 2021.
^Drożdżewicz, Leonard (2020). "Pół wieku z prof. Józefem Maroszkiem. Inspiracje do badań nad historią rodzinną". In Rogalewska, Ewa (ed.). Historia, tradycja, pamięć: prace ofiarowane Profesorowi Józefowi Maroszkowi w siedemdziesiątą rocznicę urodzin. Prace Białostockiego Towarzystwa Naukowego. Vol. 54. Białystok: Białostockie Towarzystwo Naukowe. pp. 69–82.