1 Historical Sources on the Loṅkāgaccha- and Sthānakavāsī-Traditions in Johannes Klatt’s Jaina-Onomasticon 1 PETER FLÜGEL In the absence of extensive archaeological evidence, monastic chronologies and hagiographies, inscriptions and the information in the colophons of handwritten or printed Jaina texts are almost the only sources available for the reconstruction of Jaina religious and social history. This fact was highlighted by Walther Schubring who, in his classical work on the Śvetāmbara doctrines of the Jainas, emphasised that ‘[a]ll history of literature, a building, as it were, has for its ground-loor the bio-bibliographical materials.’ 2 Schubring lamented the early demise of Johannes Emil Klatt (1852-1908) who had dedicated his short life to the study of the historical records of the Jainas. Klatt left behind the nearly completed manuscript of his monumental Jaina-Onomasticon, a collection of proper names (Greek: onoma) of Jaina authors, legendary figures, texts and place names with explanatory historical notes, handwritten in English, which is still unpublished. ‘Jain research would have enjoyed the great luck of having them [the Jaina bio-biographical materials] at its disposal, if KLATT’s Onomasticon had been completed and printed’, Schubring wrote. ‘Eight volumes from his own hand in alphabetical order contain what was within his reach to collect data concerning Jain authors and works. But he fell severely ill and never recovered. The work was estimated to ill some 1,100 pages in print, but no more than 55 pages have been printed as a specimen thanks to WEBER and LEUMANN.’ 3 Few biographical details are known about Johannes Klatt. The only sources are brief notes in academic publications of his teacher and colleagues and in the autobiography of his son Fritz Klatt. 4 He was born on 31.1.1852 in Filehne, Posen, and died after a long illness in Bonn on 28.8.1908. He studied Indology under Albrecht Weber (1825-1901) 1 The introductory part of this article was irst published in Jaina Studies – Newsletter of the Centre of Jaina Studies no. 6 (2011: 58-61). 2 Schubring (1935 § 4; 1962/2000 § 7). 3 Ibid. 4 F. Klatt (1965: 189; cf. 1977: 710). I am indebted to Klaus Karttunen, University of Helsinki, for