A colleague of mine asked me to post this on HISTARCH for him. The following is his message.
A horseshoe was found on a survey in northern New Mexico near El Moro National Monument. First, does it date to the historical period? Second, are there any other potentially diagnostic features? Pictures of the horseshoe can be viewed at http://www.sricrm.com/histarch/DSC01763.GIF and http://www.sricrm.com/histarch/DSC0174.GIF.
Thank you,
Robert Heckman
Statistical Research, Inc.
Tucson