2 girls from different times hiding letters to each other in bedpost

I remember reading this book in the late 80's. there was a secret compartment in their bedpost although that were drone different eras.

I think this is Charlotte Sometimes by Penelope Farmer.

Thank you!!

My pleasure!

For the record, the gimmick in this book is a straight and shameless steal from Jack Finney's story "The love letter", first published in the late 1950. -- Goddard

Thanks, ill have to read that

A wonderful story! I still have my copy from childhood.

Tom's Midnight Garden, a juvenile fiction novel by Philippa Pearce, uses a similar device.