Personally, I wouldn't upload any census images, especially USA ones. A good source citation, especially one that points to a non-pay site, will get people there without cluttering up the profile. One of a kind documents that are in your personal possession would be a different matter since they aren't available to anyone else. B/M/D records depend on where and when they were obtained. Many will say no copying for any purpose. That is a "license" from the issuing entity. Copyright and license terms can get complicated.