I still think of the Rancho Cucamonga Quakes as a relatively new team, but as Paul Caputo notes, the team has not undergone the changes that happen at other minor league teams:
The Rancho Cucamonga Quakes have had the same team name and, conceptually, the same logo since their inception in 1993. In minor league baseball terms, this puts the team’s identity roughly on par with prehistoric cave paintings and Betty White—attractive, but really old. In a logo landscape littered with increasingly bizarre (and, I have to admit, awesome) new nicknames, it’s refreshing to see a team that has stood by its identity and been embraced by the community.
For more of Caputo's thoughts on the Quakes, including quotations from Mike Lindskog and a disucussion of Tremor (but what about Aftershock?), read the rest of his post.