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Mark L. Boon
Mark L. Boon is a lawyer in Longview, TX who works for Boon Calk Echols Coleman & Goolsby, PLLC. Practice areas include Wills-Trusts-Probate. Board certifications include Estate Planning and Probate Law. Licensed in Texas since 1976. Graduated from University of Texas in 1976.
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Mark L. Boon
Boon Calk Echols Coleman & Goolsby, PLLCLongview, TX·49 years licensed
Claim profileContact attorney
Mark L. Boon is a lawyer in Longview, TX who works for Boon Calk Echols Coleman & Goolsby, PLLC. Practice areas include Wills-Trusts-Probate. Board certifications include Estate Planning and Probate Law. Licensed in Texas since 1976. Graduated from University of Texas in 1976.
Law school
University of Texas
Class of 1976
Bar admission
1976
State Bar of TX · No. 2626500
Office
1800 W Loop 281 Ste 303
Longview, TX 75604
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Boon Calk Echols Coleman & Goolsby, P.L.MAY 2023 — APR 2026Private Law Practice · Longview, TX
- Boon Calk Echols Coleman & Goolsby, PLLCAS OF JUN 2026Private Law Practice · Longview, TX
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Case data
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Practice & jurisdiction
Practice areas
- Wills-Trusts-Probate
Courts admitted
- US Tax Court
Credentials
Board certification
Estate Planning and Probate Law
TBLS · Certified 1989
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Last refreshed Jun 2026