1 point
My grandma, aunt, and a former boss. Admittedly not great sources, but ask any boomer who toured or lived in Italy during that era if they had a ciabatta back then.
A google books search for pre-1982 books brings up at least one cookbook https://www.google.com/search?tbo=p&tbm=bks&q=ciabatta&tbs=,cdr:1,cd_max:Dec+31_2+1982&num=100
2 points
