Sure it can be documented. The last VIN from LA is 9L531163 assembled in July of 69 with an 05A cowl tag. Norwood passes VIN 531163 in about 2 days into November of 68. (Last October VIN per GM's official list is 530337, but this is the car that actually rolled of the line at 12 midnight on 10/31/68 (Still had another 2 days of 10D cars on the line at that instant) so 9N531163 would carry a 10D cowl tag. Last Norwood VIN is 9N711922 in November of 69
VIN List - select VIN Table on left side of page
69 body numbers are seqential by date (they are actually the dealer order number assigned once the order was accepted by GM). They were not necessarily built in the order they were received in due to the need to schedule parts. There are gaps in them as orders were canceled but body 111000 could have been built in LA, and 111001 could have been built in Norwood.