This text presents the musical life in Ło´dz´ in years 1947–1960 on the basis of concert programmes of The Ło´dz´ Philharmonic that belong to The Library of the University of Ło´dz´ collections. The programmes are the part of documents of social life. It is the first sample of showing the wealth of musical information in this kind of documents. It is also an opportunity to present a short historical outline of The Philharmonic which is one of the most important institutions creating cultural life of the city. There is also an outline of history of The Library of the University of Ło´dz´, where the concert programmes are acquired, prepared and circulated. One of the part of this article is devoted to general description of documents of social life, which are always unknown and underestimated documents. First of all, the text shows the concert programmes of The Ło´dz´ Philharmonic in which you can find a lot of very interesting musical problems. Analyzing them, one can know the work of The Philharmonic and its educational role, composers and players, musical works, Ło´dz´ melomaniacs and their needs and many other things connected with reactivation of musical and cultural life in Ło´dz´ in this period.