Cambridge Society of Washington DC, Maryland and Northern Virginia: A CARO Case Study for Voluntary Alumni Organization Over the past few years the Cambridge Society of Washington DC ('Cantab DC') has embarked upon making our network an active and institutionally established alumni-run Society. Approximately five years ago, our Group had just been re-formed by a dedicated bunch of alumni, although membership/ involvement was low and several things bogged the Group down, including; uncertainty regarding alumni interest in our gatherings, a lack of an online presence, and a lack of seed funds with which to plan events and maintain our basic costs. Since then we have taken a number of steps to gauge our members’ interest, to incorporate the society as a legal and recognized nonprofit organization, and we have grown our membership list to over 2000 local alumni. More recently we have been holding a stream of engaging events that have grown the interest of newcomers to the DC area as well. We have found a number of elements have been crucial to our success along the way: Member Survey: When we first started increasing our presence, we had composed a voluntary member survey (using our mailing list and SurveyMonkey) in order to collect a representative profile on our member list including demographics (age, gender, single/married/kids), residence (DC, Maryland or Northern Virginia), Cambridge affiliations (College/degree program), occupation/income status; and we also asked about the types of events our members were interested in attending and the prices they would be willing to pay to attend such events. We were surprised about how many people responded and some of the information we received. This was very useful in planning future engagements. Making it Fun & Regular through Outreach and Social Media: In this effort to grow the Cambridge presence in DC, we then set out to establish traditions - both old and new - here in our American home. In so doing, we have put on a number of distinctive and fun events, such as the Cantab DC: Burns Night dinner with a specially procured Haggis from Louisiana; Guy Fawkes’ Night Dinner featuring an in-costume/ theatrical retrial of Guido Fawkes with some surprise twists; Holiday Party at the British Embassy; Garden Party celebrating the Queen’s Birthday; Evening with BBC Bureau Chief, Simon Wilson (Downing); Oxbridge Boat Race on the Potomac River.