More sister and brother acts

From the 1930s, the Brown Sisters:

[youtube]http://www.youtube.com/watch?v=qIdEtnWB1jg[/youtube]

From the 1940s, the King Sisters:

[youtube]http://www.youtube.com/watch?v=EE69jBxZuXg[/youtube]

From the 1950s, the Mills Brothers:

[youtube]http://www.youtube.com/watch?v=txGEMeZEUGc[/youtube]