This is the recipe for Tony Chachere's cajun seasoning in the green can that most of us use.
1-26oz box of salt
1-1/2 oz fine ground black pepper
2 oz cayanne pepper
1 oz garlic powder
1 oz chilli powder
1 oz msg (accent)
Mix well and use like salt.
when it's salty enough, It's seasoned to perfection.
This is from Mr. tonys cook book from 1972.