Between October 2007 and February 2008, I photographed a young lady (21 years old) in what amounted to 8 different sessions. These images where created strictly for artistic use and have never been sold however, they are publicly posted on not only my personal website but also on several other photo networking sites. A few months ago I received an email from the models grandmother stating that the model (her grand daughter) was to young and immature to do such a thing (some images are nudes) and requested I remove the images from online presence. Out of artistic integrity and that the body of work is good, I refused to remove them. Today I received a letter in the mail for a lawyer representing the model asking that I remove the images from online sites. The letter also claims that I have been selling the images online as well as in art galleries, which is not true. The images are online strictly to show a portfolio of work that is consistent with my style of image making and there is no desire on my part to ever sell them. My question is this... as the legal holder of the copyright, do I have a legal right to display those images as they are, regardless of no model release being signed. It is my understanding that a model release protects the model from illegal use of the images. As the copyright holder of those images I have a legal right to display them as my work. Any insight would be helpful.