The New Netherland Institute's description of Fort Orange includes pictures by Len Tantillo
http://www.nnp.org/vtour/regions/Albany/fortorange.html
http://www.nnp.org/vtour/images/fortorangeprint.jpg
For additional reading see the New Netherland Institute's complete bibliography:
http://www.nnp.org/nni/Research%20&%20Education/bibliography.html
Fort Orange 1635 by Len Tantillo