Although the colonial period produced several women writers of note, the revolutionary era did not further the work of women and minorities, despite the many schools, magazines, newspapers, and literary clubs that were springing up. Colonial women such as Anne Bradstreet, Anne Hutchinson, Ann Cotton, and Sarah Kemble Knight exerted considerable social and literary influence in spite of primitive conditions and dangers; of the 18 women who came to America on the ship Mayflower in 1620, only four survived the first year. When every able-bodied person counted and conditions were fluid, innate talent could find expression. But as cultural institutions became formalized in the new republic, women and minorities gradually were excluded from them.