Child friendly books that explain autism

[naturallydelicious]

Hello can anyone recommend books that are suitable for a 4 year old to help explain to them that their old sibling has autism ?
Also for anyone else with a child with autism did you sit your other children down to explain or did you wait until they brought it up ? Tia x

try this one here x
www.amazon.co.uk/Autism-Things-Differently-First-Look/dp/0750289481/ref=rtpb_3/260-8682835-1059354?psc=1&pf_rd_p=ec4d7e9a-00bd-453d-800d-87a48af76780&_encoding=UTF8&pd_rd_wg=6pSXt&pf_rd_r=ARA2KNYJFXQ43QCKAXBY&pd_rd_i=0750289481&pd_rd_w=WizVf&tag=mumsnetforu03-21&refRID=ARA2KNYJFXQ43QCKAXBY&pd_rd_r=a0056929-b029-430b-8273-cac92cd86482