We should use the "SM" mark after Old Sturbridge, except when refering to Old Sturbridge Village or Old Sturbridge, Inc. To do this follow the directions below:
1) Switch to plain text mode and input ℠ wherever you want that symbol. That is the HTML entity code for displaying that symbol.
2) (When logged in) go to http://www.osv.org/node/1120/edit and copy the symbol from that page. You can then paste it into any WYSIWYG. This might be easier for people.