Founder of chiropractic — performed the first adjustment in 1895 and founded the first chiropractic school two years later.

"The Constructor" — systematized chiropractic as a distinct science, founded Carver College and defended the profession as a lawyer.

"First Lady of Chiropractic" — wrote the profession's first anatomy textbook and taught for more than four decades.

Founder of Logan Basic Technique — a low-force method using gentle, sustained pressure on the pelvis — and founder of Logan College.

"Developer of Chiropractic" — built the profession into a worldwide movement and shaped its vitalistic philosophy.

Builder of the largest chiropractic hospital in history and a legal champion for chiropractic's right to operate its own inpatient facilities.

Founder of Concept Therapy — joined chiropractic with a holistic body-mind-spirit understanding and the "Spinal Demonstrator."

Founder of the Gonstead Technique — developed a precise, X-ray-based full-spine method and built one of the world's largest chiropractic clinics.

Founder of Sacro-Occipital Technique (SOT) — combined chiropractic, osteopathy and cranial work into a distinct system.

Founder of the Receptor-Tonus Technique ("Nimmo Technique") — brought the role of muscles and trigger points to the center of subluxation analysis.

Founder of Directional Non-Force Technique (DNFT) — chiropractic's original low-force method, using a "challenge," a leg-reflex test and a fine thumb impulse.

Inventor of the Thompson Drop Technique and the drop table — revolutionized adjusting through mechanically assisted, low-force correction.

Longtime president of the National College of Chiropractic — a pioneer of scientific education, anatomical research and the accreditation of the profession.

One of the most influential philosophers and communicators of "objective straight" chiropractic — author of *The Triune of Life* and co-founder of two colleges.

Founder of Life University — the largest chiropractic college in history — and champion of the vitalistic "Lasting Purpose" philosophy.

First chiropractor with a doctorate (anthropology) — first research director of the National Chiropractic Association and co-author of foundational scientific works.

Swiss research pioneer — investigated the biomechanics of the pelvis and spine and founded an institute in Geneva for the statics and dynamics of the human body.

Founder of Applied Kinesiology — combined muscle testing with chiropractic diagnosis and was the first chiropractor on the medical team of the U.S. Olympic team.

Founded the Parker Seminars and Parker College, teaching a service-centered "Love Concept" of practice-building that shaped chiropractic education and office practice for generations.

Developed the Atlas Orthogonal technique and instrument — a light-force, instrument-guided method of realigning the atlas vertebra that became a board-certified upper-cervical specialty.

Author of "One Cause, One Cure" and other works articulating traditional straight chiropractic philosophy; a prominent defender of chiropractic's vitalistic, subluxation-centered identity.

A globally renowned vitalist speaker and author whose lectures and recordings championed chiropractic philosophy, the power of the adjustment, and service-centered practice.

Author of "Essential Principles of Chiropractic" (1984), a widely used text that systematized chiropractic philosophy for generations of students.

Formulated the "33 Principles of Chiropractic" (1927) — the enduring philosophical foundation of vitalistic chiropractic, still taught today.

Drove instrument development and clinical research at B.J. Palmer's clinic — the neurotempometer, neurogalvanograph, cervical X-ray chair, and pattern-analysis methods still echoed in modern practice.

A leading voice of objective straight, non-therapeutic chiropractic; his "Chiropractic Philosophy" and companion texts articulated a subluxation-centered, non-therapeutic model for practice.