I was about to research this anyway, so here you go. As far as I can tell, the following are the essential amino acids for adults, meaning these must be ingested. Kids have additional requirements that may or may not be available in a vegan diet--I didn't look those up. (Disclaimer: The following information came from Wikipedia and healthvitaminsguide.com in addition to a scientific journal. Since much of this did not come from a valid scientific source, you should verify to make sure its really true.)
Valine: Valine is an essential amino acid, hence it must be ingested, usually as a component of proteins. Nutritional sources of valine include cottage cheese, fish, poultry, peanuts, sesame seeds, and lentils.
Leucine: As an essential amino acid, leucine is not synthesized in animals, hence it must be ingested, usually as a component of proteins. It is synthesized in plants and microorganisms via several steps starting from pyruvic acid. Leucine food sources in descending order: soybeans, lentils, cowpea, catjang, beef, peanuts, pork, fish, crustaceans, chicken, Nuts, almonds, Egg yolk, Chickpeas, sesame, flax seed, walnuts, Egg whole, egg white, Sausage, Milk sheep, Hummus, Milk goat, Milk whole, Soy milk, asparagus, Snap beans green, Milk human
Isoleucine: It is an essential amino acid, which means that humans cannot synthesize it, so it must be part of our diet. It is present in almonds, cashews, chicken, eggs, fish, lentils, liver, meat etc. Isoleucine is found especially in high amounts in meats, fish, cheese, most seeds and nuts, eggs, chickens and lentils.
Threonine: It is an essential amino acid and thus indispensable in the diet of man. Found in cottage cheese, fish and other seafood, meats, poultry, peanuts, sesame seeds, lentils.
Methionine: Methionine is a nutritionally essential amino acid. It may be substituted with its corresponding keto acids, which on amination gives rise to methionine. The body cannot synthesize the corresponding keto acids. Methionine is found in good quantities in meat, fish, beans, eggs, garlic, lentils, onions, yogurt and seeds. Other sources of methionine are cheese, eggs, chicken, and beef.
Phenylalanine: Phenylalanine is an essential amino acid. It is not synthesized in the body but in the microorganisms it is synthesized. L-phenylalanine is found in most foods that contain protein such as beef, poultry, pork, fish, milk, yogurt, eggs, cheese, soy products (including soy protein isolate, soybean flour, and tofu), and certain nuts and seeds. Banana is also a rich source of phenylalanine. The artificial sweetener aspartame is also high in phenylalanine.
Lysine: It is not synthesized in the animal. It is essential for growth. G ood sources of lysine are foods rich in protein including meat (specifically red meat, pork, and poultry), cheese (particularly parmesan), certain fish (such as cod and sardines), nuts, eggs, soybeans (particularly tofu, isolated soy protein, and defatted soybean flour), spirulina, and fenugreek seed. For vegetarians, legumes (beans, peas and lentils) are the best sources of lysine.
Tryptophan: It is essential amino acid and should not be omitted from the diet. Tryptophan, found as a component of dietary protein, is particularly plentiful in chocolate, oats, bananas, dried dates, milk, cottage, cheese, meat, fish, turkey and peanuts.