Charles P.T. Moore was very eager to spread the principles of Phi Kappa Psi to other colleges. The second Phi Kappa Psi chapter was established in 1853 at the University of Virginia. At this time, a man named Thomas Cochran Campbell was the most active man in the Fraternity. He felt that Phi Kappa Psi was founded by its' peculiar character and strong foundation. In 1855, the first Grand Arch council was held in Charolettesville, Virginia. Members from Virginia Alpha exerted a strong influence and the following GAC in Canonsburg showcased members from this chapter.

After the outbreak of the Civil War in 1861, the chapters of Phi Kappa Psi suspended operations. A majority of the brotherhood (552 out of 800) were involved in the war, and more than 100 were killed. One brother, C.F. "Dab" Williams, donated to the Fraternity an unidentified, antique, homemade Phi Kappa Psi badge found on the Hagerstown Pike near Gettysburg, Pa. the day after the Civil War battle ended at that location.

During the 1880s there had been a growing demand for changes from the Grand Chapter method of government. In 1885, the Grand Arch Council appointed a committee to draft a new system providing a strong, centralized Executive Council. This new Council would consist of graduates and undergraduates serving as heads of each district. In 1886, the report of this system was adopted at a special Grand Arch Council in Indianapolis and this revolutionary system was adapted and still in effect today. William Clayton Wilson planned the new form of government and drafted the new constitution. As a result of this farseeing development the Fraternity owes a debt of gratitude to this individual.

In 1952, a centennial anniversary was celebrated in the old home of the Widow Letterman in Canonsburg. Over 100 members gathered together for the occasion and a bronze tablet commemorating the centennial was moved to the Pennsylvania Alpha chapter house. Phi Kappa Psi had grown to 56 chapters, 40 Alumni Associations and 40,000 initiates within its' first 100 years.

The Texas Gamma Chapter of Phi Kappa Psi has a long, distinguished history at Texas State University. In the fall of 1966, the Greek system of Southwest Texas State College was one in which diverse groups of men or women were few and far between. Our chapter’s founder, Clifford Jay Berkman soon realized that even though he wanted to join a fraternity, nothing the college had to offer at the time was truly appealing to him. It was then, in the spirit of William Henry Letterman and Charles Page Thomas Moore that C.J. Berkman decided to form a new kind of fraternity at Southwest Texas; one devoted to diversity, humility, scholarship, gentlemanly conduct, and most importantly, brotherly love.

On October 15, 1966, Brother Berkman’s vision of a new fraternity was realized in the formation of a local fraternity known as Delta Phi Theta. Berkman’s experiment in brotherhood would quickly prove a success, finding many young men of similar ideals who wished to join the campus’ newest fraternity. In early November of that year, Delta Phi Theta was formally accepted into the university’s Interfraternity Council. Before long, Delta Phi Theta had earned a reputation as one of the most competitive chapters on campus; all while keeping to their ideals of honor and diversity.

Delta Phi Theta continued to operate successfully for two more years as a local fraternity before its members made the decision to petition a national fraternity for membership. In 1968, Brother Cecil Trainor, a graduate of Texas Tech University and an alumnus of Texas Beta, was serving as the faculty advisor for the brothers of Delta Phi Theta. Brother Trainer was the man who first suggested that the Deltas contact the Phi Kappa Psi Fraternity and request that they be made the fraternity’s next chapter.  The Executive Council ultimately agreed and on September 20, 1968, the Delta Phi Theta fraternity officially ceased operations to form the Texas Gamma Colony of Phi Kappa Psi.

The colony worked and struggled for several months to prove to the National Headquarters that it was deserving of receiving their charter. On April 26 1969, the chapter’s efforts were rewarded, and the Texas Gamma Chapter was formally initiated into the Phi Kappa Psi Fraternity. Initiated into the fraternity as the 100th chapter, the chartering of Texas Gamma represented an important milestone in the history of Phi Kappa Psi. The Executive Director, Ralph “Dud” Daniels (later named Mr. Phi Psi) invited the entire chapter to the National Headquarters in Indianapolis, IN for their lavish initiation banquet.

Throughout the 1970s and 1980s the Texas Gamma chapter thrived at Southwest Texas State University as one of the school’s most successful Greek organizations winning Greek Week in '75 and the campus all-sports championship in '81. Dwindling membership numbers, however, led the chapter to voluntarily surrender its charter in 1993 with Badge # 298 as its final initiate.

 However, alumni wouldn't let the chapter stay gone lone. In 1997 more than 50 alumni gathered in San Marcos to plan Texas Gamma's return. Spearheaded by Bill Taylor, Joe O'Connell and chapter founder C.J. Berkman, the alumni had to fight resistance from the school's Interfraternity Council--which worried about the added competition--but continued for five years in the effort.

Finally, the Phi Kappa Psi Fraternity returned to Southwest Texas State University and began the process of resurrecting its once-proud 100th chapter. To this end, the National Headquarters sent two of its finest young Phi Psi advisers, Joel Gildner and Chad Stegemiller, to San Marcos to begin the arduous process of re-colonization. The new colony worked diligently for over a year to regain its charter, and on October 11, 2003, Texas Gamma was once again reinstated as a full chapter of Phi Kappa Psi. At Phi Psi’s 2004 Grand arch Council, Texas Gamma was greeted with uproarious applause and presented once again with the Chapter’s GAC banner. After more than 10 years, Texas Gamma had finally returned home.