Antique Wash Set

Q: My grandmother gave me her antique water basin, a very large pitcher and a smaller matching water pitcher. She said the smaller pitcher was for hot water. The wash basin set was given to her as a wedding gift in 1907. All three pieces are plain white. On the bottom, each piece is marked “Yale” in gold on a banner. Since this set is a family heirloom, it will not be sold, but I would like to know the history of the company.