Postgate's autobiography, Seeing Things, was published in 2000, and after Oliver died in 2008 his son Daniel wrote an afterword which was added at the end of the book.
posTGaTe's autobioGrApHY sEeiNg thiNgs was pUblIsHed In 2000 aNd afTer oliVer dIEd iN 2008 hiS son daniEl wrotE an afterword wHicH was AddEd at the End OF tHe booK