~From the Site Inventory Form, State Historical Society of Iowa for this property. You may see the entire report by following the Architectural Survey listed in the "Sources" section.
Thank you, correct photos posted and link to inventory form added.
You have the wrong house posted as the Alexander Clark House.
The correct, along with information and photo, can be seen at http://musserpubliclibrary.org/uploads/2012/04/WH-040-203-205-W-3rd-St-70-00203.pdf
In the meantime, thank you for your site. I enjoy browsing the photos.