Can you tell what type of photos these are?  
A tintype (left) can be tested with a magnet. A daguerreotype (right) can be viewed as a negative image in the right lighting conditions. Some photos require lighting and 10x up to 120x magnification to be identified. Monica Mull, owner of Art CPR, gained expertise in dating and preserving old photos from Alice and Jae of the Image Permanence Institute's September class, hosted by the Chicago History Museum. Located at the Rochester Institute of Technology, New York, the IPI has created a new website tool to help identify photo processes. ​See if you can use the site to identify some of your old family photos! Or make an appointment with Art CPR to identify and conserve your family heirlooms. 
​http://www.graphicsatlas.org

Sometimes an artist's work needs restoration in his or her lifetime. If an artist is still living, it is best to seek out the artist and request that they re-paint damaged areas of their own paintings. If not, that's where a conservator steps in with reversible paints. 
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In this case, Wisconsin artist Tom Uttech's painting had fire and water damage. Paint loss occurred as a result of water soaking the painting, especially at the bottom. Art CPR conservator Monica Mull worked in collaboration with the Museum of Wisconsin Art and Tom Uttech to preserve this large 60 x 75" painting that he created in 1965. Conservation work included dry cleaning the front and back, stabilizing loose paint & application of gesso to the areas of bare canvas. Now that those areas are primed with gesso, they are ready for Tom to re-paint.....Take it away Tom!