Kolberg came to the Kalisz region twice, in 1843 and 1863. The hospitality of the local gentry and his frequent travels resulting from his position as accountant in the management board of the Warsaw-Vienna Railway favoured establishing numerous contacts and conducting extensive research in this region. At that time, Kolberg visited many towns, such as Cielce, Krasice, Wieluń, Częstochowa. However, he managed to publish only a part of all the material from this region.