Instruction sheet for wooden "Butterfly building block" toy for children

Children can use this box of building blocks (from accession nos. 2007-51167 to 2007-51191) to form several different interesting structures according to this instruction sheet. This toy belongs to a series of objects (accession nos. 2007-50972 to 51483) that document the lifestyle and consumption of a typical Chinese upper middle-class family in the mid 20th century.