The Lithuanian Dictionary is a handwritten lexicographic relic kept at the Department of Manuscripts and Early Printed Books of the Czech National Museum Library (shelfmark IV A 11). This work spanning 30 sheets of a large format (21.5 × 35.5cm) represents a unified and finalized philological study (ordered alphabetically from A to Ž). It is a transcript (created approximately in the years 1850-1851) of the original work which was being created continuously throughout the first half of the 19 th century. The first mention of "Letawský Slownjk" (The Lithuanian Dictionary) of F. L. Čelakovský can be found in the fragment of a letter from J.V. Kamarýt from 1827.