Using tuna canned in water–with a reason, for once.

Using tuna canned in water–with a reason, for once.
Made with canned tuna, onion soup, and cream of celery soup.
With tuna, lime, and green onion.
For chicken or tuna.
Using canned soup and Minute Rice.
Any thoughts on what volume of tuna is intended here?
Of course, we aren’t really talking about Chinese noodles.
First appearance of this classic!
From 1959’s “133 Quicker Ways to homemade… with BISQUICK.”