Any Thoughts On Pedigree?

I bought this DO back in the mid 1970's but haven't used it much (used to use it mainly for making chili). On the bottom side is is stamped:
8
DO
Made
IN
USA
D
and that's it.
On the underside of the lid it is stamped:
10 1/4
8
No other markings I can find.
I plan to resurrect it for use in my cargo trailer conversion but thought I would toss it out to the CI history buffs here for identification, if possible.
Any help is appreciated.
Don

8
DO
Made
IN
USA
D
and that's it.
On the underside of the lid it is stamped:
10 1/4
8
No other markings I can find.
I plan to resurrect it for use in my cargo trailer conversion but thought I would toss it out to the CI history buffs here for identification, if possible.
Any help is appreciated.
Don