The Constituent Societies of the CIC congratulate their members who are celebrating 50-years of membership in 2013: Hanspeter Alder; Howard Alper; John Apsimon; Ronald Brown; Dennis Davies; Peter Grindrod; Ross Hoyle; Matthew Hrabluk; K. Jabalpurwala; Bryan Jones; Photios Kizas; W. Larisch; John McIntosh; Anwer Mehkeri; J. Muchowski; Frederick Otto; J. J. C. Picot; Maurice Servranckx; Michael Tomlinson; Marcel Walker; Gordon Wood; and John Wood.