ENThe Wróblewski Library at the Lithuanian Academy of Sciences includes a surviving review of a typescript work by Seraja Szapszał dedicated to the history of the Lithuanian Karaites. Szapszał completed his study in 1949 and hoped to have it printed in Lithuania. Jablonskis’ critical remarks focused on a number of historical aspects of the Karaite past. However, it remains an important contribution to a specific academic debate. Keywords: Seraja Szapszał, Konstantinas Jablonskis, Karaites, Lithuania.