This is a very old entry — images are small, formatting is off.
Established in 1933, the Texas Farm Bureau is a member-controlled and financed organization that provides “a voice for farmers, ranchers, rural citizens and everyone interested in preserving and protecting this way of life” and one of its main functions is grassroots policy development. The new logo has been designed by Interbrand. More images here. Press release here. As far as updates go, this is one of the most remarkable, simply because of how un-designed the old one was.