The article is an attempt to describe over 400 announcements preserved as copies in a secret archive of the ghetto in Bialystok. The text presents the circumstances in which the notices were issued and analyses such formal elements of them as heading, number or signature, from which it is possible to learn about daily life and occurrences in Bialystok ghetto, as well as the issuing authority or the group to whom the announcements were addressed. The author quotes a classification of documents proposed by Szymon Datner, which reflects important aspects of ghetto life, such as forced labour or education. The final part of the article reviews announcements on the back of which there are hand-written notes, presumably made by Mordechaj Tenenbaum.