This is first and foremost; DO NOT post materials protected by copyright other than your own!  Any posted biographies found to be protected by a copyright of someone other than the submitter must be removed from all Minnesota and/or county Biography pages.  Books and biography collections printed prior to 1922 are generally not protected by copyright and are considered to be in the public domain.  Photo static re-prints or duplications of pre-1922 works are not protected by current copyright.  The short story here is: Make sure your source books are pre-1922 originals, or re-prints or copies of pre-1922 originals.   

You can also write a biography of your own!  All you need is the Who, What, Where, and When. If you are able to, try to include some personal info about the individual.  What did he/she do for a living?  Did they belong to any groups or clubs?  Any hobbies? What church did they attend? The little extras help to fill out the biography and makes it not just about names and dates. Of course, names and dates are always good. ; )    Check out this sample biography that I wrote for one of my Ohio ancestors .   Make sure all original works are accompanied by your copyright notice, which is at the least the word "copyright", your name, and the date.