friendship book
homemade booklet or sheet of paper shared among pen pals to collect addresses and other short messages, with a system of abbreviations
en-GB/ˈfɹɛndʃɪp ˈbʊk/
en-US/ˈfɹɛndʃɪp ˈbʊk/
homemade booklet or sheet of paper shared among pen pals to collect addresses and other short messages, with a system of abbreviations