The website EarlyLDS.com lets you search most of the Nauvoo databases. There are lots of things on this site, including an app called Map-N-Tour which you can put on your mobile device and download a number of different databases. The pdf version of the "Crossroads to the West Web Site and Mobile Apps User Guide" can be downloaded from here. Check it out!
Source: Logan FamilySearch Library Newsletter, June 26, 2013, Vol. 14, Issue 26