Notable American Women . 4 covers the modern period. Scope includes women who had a public life. Articles range from 400-7000 words. A very scholarly source.
Articles are comprehensive and include bibliographies.
A fine and creditable source. Women in World History. A Biographical Encyclopedia. This is a projected 16 volume work of which 10 have been published. The entries are comprehensive and the have many attractive features among them sources, suggested reading, location of manuscript collections and media productions.