1866 Thomas Marr was born on October 20th. 1869 Marr became Deaf due to scarlet fever. 1884 Completion of Marr’s high school education. 1889 Marr graduated from Gallaudet College with Bachelor of Science degree. 1892 At the Massachusetts Institute of Technology, Marr took some architecture courses. 1897 By this time he finally owned an office which he paid 10 dollars per month for rent. 1904 Marr hired a boy named Joseph Holman, a 13-year-old boy, as an errand boy. 1910 Thomas Marr admitted to partnership with Joseph Holman. 1923 Richard S. Reynolds was hired as a Civil engineer. 1924 Eight different buildings at the Tennessee School for the Deaf campus were erected by Marr. 1928 James L. Howard was hired as a structural engineer. 1936 Marr died on March 2 due to paralysis stroke. Holman took over the firm. 1952 Holman passed away. The firm was reorganized and Reynolds took over until his retirement in 1970.