On this day in 1789, Americaâs first presidential election is held. Voters cast ballots to choose state electors; only white men who owned property were allowed to vote. As expected, George Washington won the election and was sworn into office on April 30, 1789.
Eggs, milk, and fortified cereals are good sources of preformed vitamin A. For plant-based provitamin A, the following foods are your best bets.reformed vitamin A occurs naturally in dairy products, eggs, fish and meat, especially liver. Carotenoids are found in bright yellow and orange vegetables such as carrots, pumpkin and sweet potatoes, broccoli and spinach.
There are two main sources of vitamin A, animal sources and plant sources. Known as retinol, animal sources of this essential vitamin contain preformed vitamin A. Vegetable sources contain carotenoids, such as beta-carotene, which is converted to retinol by the body.itamin A that comes from animal sources is well absorbed and used more efficiently by the body then other sources of the vitamin. The two main sources of vitamin A from animal products are beef liver and turkey giblets. Other sources of this fat soluble vitamin include: 1  Chicken liver. 2  Cod liver oil.