3 Shell Identification

[rk]

I would appreciate if someone could identify 3 shells for me and perhaps were they may have come from.  They were in my father's home collection and I would like to know.  I have placed 2 photos of each shell on flick at <a href="http://www.flickr.com/photos/houstonbound/" target="_blank"><!-- m --><a class="postlink" href="http://www.flickr.com/photos/houstonbound/">http://www.flickr.com/photos/houstonbound/</a><!-- m --></a>

You will need to click on 'photostream'.

Please reply to <!-- e --><a href="mailto:keas3210@yahoo.com">keas3210@yahoo.com</a><!-- e -->
Thx