With the rise of ethnic politics in Nepal, the Limbu (or: Yakthumba) have made increasing use of the Limbu script, also known as Srijanga or Kiranti. Whereas in the past this script was suppressed by the state and known only to a minority, since the return of democracy to Nepal in the 1990s a new literature using this script has come into being. Here, religious books play a prominent role. This essay deals with the emerging importance of the script as a marker of ethnicity since its first general propagation by Iman Singh Chemjong and Phalgunanda Lingden in the early twentieth century. It focuses on the early production of printed books, in particular books published by followers of the Satyahangma movement, which promotes reforms of Kiranti religion and society.