Picture books made by factories about holidays

Discover 2 picture books made by factories (fabrieksprentenboeken) about holidays from the beginning of the 20th century. In these types of picture books there is no publisher, no printer, no illustrator, no author and no year of publication. They are often issued in a large edition and produced cheaply. These 2 picture books are interesting because they are so rare. In addition, they give a picture of means of transport and ideas about holidays

Shelfmarks: KW XKZ 0214 (Buiten! Waar de vogels fluiten) and KW XKZ 0213 (Hoera! Wij gaan op reis)