APTCR, APTCN, APTCP, APTCRO and APTCC
But when you delete a batch those tables are cleared of the related records.
You had asked if you could find out who deleted it and APBTA's AUDTUSER will have the last user who modified the record which should be the use who deleted the batch since you can't do anything to a batch after that happens.
You could look in BKCHK or BKTRANH for voided check records in case you want to know if the checks were printed. Not sure if that will help.