"The Career Development Quarterly" has been the premier journal in the field of vocational guidance and career intervention since its inception 100 years ago. To celebrate its centennial, 3 former editors trace its evolution from a modest and occasional newsletter to its current status as a major professional journal. They recount its history of publishing foundational articles in vocational guidance practice and career development theory, commitment to improving counseling practice, leadership in public policy and social justice issues, and expansion to international audiences. (Contains 1 figure.)