The following Branches of the OGS are celebrating anniversaries this year -
London-Middlesex Branch OGS is celebrating its 45th anniversary this year, and they are going to have a new website. They are located at http://londonmiddlesex.ogs.on.ca
Kingston Brach OGS is celebrating its 40th anniversary this year, and its website is at www.ogs.on.ca/kingston
Kent County OGS is celebrating its 35th anniversary this year, and it is located at http://ogs.on.ca/kent
Leeds & Grenville Branch OGS is celebrating its 35th anniversary this year, and its website is located at www.leedsandgrenvillegenealogy.com
Perth County Branch OGS is celebrating its 30th anniversity this year, and its website is located at www.ogs.on.ca/perth
Sault Ste. Marie & District of Algoma Branch OGS is celebrating its 30th anniversary this year, and its website is located at www.rootsweb.ancestry.com/~onogsssm/index.html
I wrote about the 30th Anniversary Celebration to be held at the Simcoe County Branch on the 14th of January in a blog entitled 30th Anniversary Celebration at http://genealogycanada.blogspot.ca/2013/01/30th-anniversary-celebration.html