question about wierd build sheet found hidden inside 1967 firebird

so i hope someone on here can help... during the recent restoration of the interior on my 67 firebird convertible, inside the seat vinyl i found a little sheet of paper. it is very badly deteriorated but i was able to piece it mostly back together. the big header at the top says: BODY BROADCAST COPY and then has lines and lines of options and codes- sorta like a checklist. is this what people refer to as a "original build sheet" or is this something less common? does someone have a scan of an original build sheet that i can compare this to? let me know if someone wants to see a scan of this... thanks for any help... -ZEFF