Following the favorable election of the Fifth Convention, President Garvin made Omicron Chapter at the University of Pittsburgh on January 30, 1913. Brother Dickason, the General Secretary, was appointed to this task of establishing the chapter, but found that school duties interfered and President Garvin carried out the commission. Seven candidates were selected out of twenty-five black male students at the university. These students had formed the Phi Lambda Mu Club in October, 1911, and this organization had continued to maintain itself. The students selected as candidates were W. Robert Smalls, Richard Fowler, W. Ray Banks, A.D. Stevenson, J.P. Dancy, Nathaniel Brown and T.W. Primas.

 

The officers selected for the chapter were Richard M. Fowler, Jr., president; William Robert Smalls, vice-president; W. Ray M. Banks, secretary, and Arthur D. Stevenson, treasurer. On the following night a banquet was given to the new chapter by the alumni of the university. Chancellor McCormick of the university was the principal speaker, in honor of the university's recognition of the Alpha Phi Alpha Fraternity.

At the beginning of the school year, 1914, Omicron Chapter occupied a chapter house which consisted of nine rooms and two baths. It was said to be beautifully furnished. This chapter brought the total numbers of chapters to sixteen. Twelve of those were reported as active by the General Secretary and they were reported as "located at some of the best universities in the country."​

 

Since then, the Omicron Chapter has expanded to Carnegie Mellon University and California University of Pennsylvania.