Theorie relativity speciální i obecná:

Praze [Prague]: Fr. Borový, 1923.

First and only edition of the Czech translation of Einstein's Über die spezielle und die allgemeine Relativitätstheorie first published in German in 1916 with the English translation appearing in 1920. It was intended by Einstein as a brief, popular introduction to his theory of relativity. This Czech edition has a special preface by Einstein written for this translation. Einstein worked in Prague for seventeen months in 1911-12 and retained a fondness for the city. 8vo. 210x135mmpp. 103 [2,1bl]. Original Blue card wrappers with striking design. Some toning and creasing to edges of wrappers but otherwise in very good condition and excellent internally. Title page has ownership inscription of Robert Knuwehil (?). This Czech translation is rare, OCLC recording only five copies worldwide.