The June 1989 elections to Sejm and Senate were conducted as a result of the Round Table agreement be-tween the PRL government and parts of the opposition, gathered around the Citizens’ Committee led by the Head of NSZZ “Solidarność”, Lech Wałęsa. The elections were an important step towards overthrowing the Communist system, regardless of serious concerns about their formula, sanctioned by an ordinance with a non-democratic division of mandates in the Sejm which was to guarantee majority to the ruling camp. In the House of ”Gazeta Olsztyńska”, Branch of the Museum of Warmia and Mazury in Olsztyn, it is possible to find nearly 1.5 thousand inventory units; this collection of materials gathers mostly items made by all-Poland structures, but also contains those of the regional NSZZ “Solidarność” circles in the years 1980–1989. The article discusses over three hundred records of social life during the election-related campaign and the parliamentary elections of 1989, distinguished from the overall volume of available sources. These are mainly posters, photographs, banners, stickers, flyers, along with forms, instructions, trade union bulletins and election guides. Particular attention is devoted to those manufactured by the “Solidarność” Citizens’ Committee of Warmia and Masuria.