About Us - mahco.com QuickBooks, QuickBooks Consultant, Certified QuickBooks Consultant, CPA, Accountant, Tax, Tax Preparation, CA, Burbank, Computer consultant Founded in 1949 when Morton Alan Haas went out on his own with the goal of building an accounting practice by providing the best quality of client service, Morton Alan Haas & Co. has grown into a 21-person firm heading into the second decade of the 21st century.