Buying dividend stocks is one of the best ways to beat the market long term. Stable dividends can be even more valuable than just a high yield, which is why DuPont (NYSE:DD), 3M (NYSE:MMM), and Procter & Gamble (NYSE:PG) are three of the most valuable dividends on the market. 

DuPont's agriculture business allows for the stability that's paid a dividend since 1904, 3M's innovation has led 97 straight years of dividends, and Procter & Gamble has paid its dividend since 1890. 

Erin Miller sat down with Travis Hoium to see why these are such great dividends and why investors should get in for the long haul.