The book presents the centenary of Polish children's book illustrations in 100 alphabetically arranged entries. They provide a cross-sectional picture of the achievements of this field since 1918, describing the thematic areas and motifs appearing in illustrations, artistic techniques, stylistic tendencies, the most outstanding illustrators of children's books and the most significant publishing series. The essence of the book are illustrations - it contains over 900 works by over 200 Polish illustrators. They include both recognized masters of illustration (including Bohdan Butenko, Adam Kilian, Zbigniew Rychlicki, Janusz Stanny, Jan Marcin Szancer, Franciszka Themerson), as well as contemporary artists of various generations (including Edgar Bąk, Jan Bajtlik, Emilia Dziubak, Monika Hanulak, Marta Ignerska, Grażka Lange, Aleksandra and Daniel Mizieliński, Marianna Oklejak, Paweł Pawlak).