Here are some links to explore:
http://www.missionscalifornia.com/
http://www.californias-missions.org/index.html
http://www.seecalifornia.com/missions/directory.html
http://www.scholastic.com/teachers/article/spanish-missions-us-history
http://factcards.califa.org/mis/model.html
http://sandiego.communityguides.com/missions
http://www.ca.gov/About/Maps/Missions.html
Here are some examples of models of missions :
http://www.missionscalifornia.com/
http://www.californias-missions.org/index.html
http://www.seecalifornia.com/missions/directory.html
http://www.scholastic.com/teachers/article/spanish-missions-us-history
http://factcards.califa.org/mis/model.html
http://sandiego.communityguides.com/missions
http://www.ca.gov/About/Maps/Missions.html
Here are some examples of models of missions :