About JH
General:

American Institute of Certified Public Accountants
Internal Revenue Service
Small Business Administration
Texas Comptroller
Texas State Board of Public Accountancy

Johnston Harrington, P.C. Important forms:

JH General Service Agreement
IRS Power Of Attorney (Form 2848)
Entity Classification (Form 8832)
IRS Scorp Election (Form 2553)
IRS Application for EIN (Form SS-4)

Miscellaneous:

Additional resources
Financial Guides
Tax Center

Announcements:

Johnston Harrington, P.C. Announcemnt/Letter to JH Clients
Yearend Planning Letter/"Tips" to JH  Clients