Let us know what you learn. Thanks for the direction. My concept of nutritional sources was different from what I found. Here is a synopsis of what I found. Essential amino acids can be found in food sources that provide complete protein.
Good sources are meat, fish, fowl, eggs, dairy products and legumes.
One source stated that a strictly vegetarian diet will provide you with all the essential amino acids because of the volume of food we normally eat. The important factor seems to be to determine the amount of protein any food can supply and eat accordingly. The notion that vegetarians had to combine food to receive complete protein is incorrect. The source went on to say, normally the only time you would get into trouble with a vegetarian diet is if you ate only fruit. The protein in meat vs. plant issue seems to be more of a matter of quantity than quality.