In the spring of 1919, 12 men gathered together in Pullman, Washington and created the social fraternity Psi Nu Sigma. It was the movement that sparked the beginning of Delta Upsilon on Washington State University campus.

Under the auspices of these 12 men, a rush program was instituted. By the close of spring semester 1919, with 22 members, it was announced that Psi Nu Sigma had become a new local fraternity with Dr. F.F. Potter, head of the Philosophy department, acting as advisor to the group.

In the Fall semester of 1919, they leased a house at 1305 Star Route St. (now Maple Ave. ) which was the house of ex-president E.A. Bryan. Brother John Kruger was elected as the first president, and Brother J. Montzheimer was the first house manager.

It was in these early beginnings that Psi Nu Sigma endeavored to make the principles and ideas of Delta Upsilon their own. The next 13 years, beginning in 1920 were hard and arduous ones in attaining their goal. One of the prime movers behind Psi Nu Sigma was Dean Gilbert W. Laidlaw, dean of the Palouse area diocese of the Episcopal Church and alumnus of the mother chapter Williams.

On March 22, 1922, Psi Nu Sigma, to place themselves on a sound basis, incorporated under the laws of the State of Washington. Thus they followed the example of Delta Upsilon and furthered their cause for initiation. In the Spring of 1924, Psi Nu Sigma, purchased the old house on our present location from the SAE fraternity. We had owned the lots where the present SAE house is today, and they wanted the land to build a new house. We used the lots as a down payment on the house and Psi Nu Sigma took one step closer towards initiation into Delta Upsilon.

Brother John D. Scott, Secretary and traveling representative of DU visited Psi Nu Sigma many times, and encouraged the members to continue their quest for initiation, and not to give up hope for eventually it would come. Then Brother Scott edited a film of the university and the fraternity for presentation at the 1932 National Convention. Brother Matthew A Hill, a University of Washington Alumnus and Seattle attorney, now a justice on the Washington State Supreme Court, took the film to the convention and presented our case. It was at this convention after the 13 years of petitioning, that the necessary seven-eighths majority vote of the convention passed and Psi Nu Sigma became the fifty-eighth chapter of Delta Upsilon. On March 4, 1933, the Washington State chapter of Delta Upsilon was formally installed at the Washington Hotel ( Now Pullman Civic Center ) in Pullman.

In the Fall of 1963, the chapter house was closed down due to its general rundown condition and the future of Delta Upsilon looked dim. Under the active leadership of Brother Orville E. Varner, president at the time, a pledge program was instituted and ten new men were pledged. Of these ten, eight were initiated.

For the entire 1963-1964 school year, we were without a house. The members and pledges lived in dorms and apartments for the entire time. But weekly meetings were held and the spirit of the small group didn't give out. They continued to look for a financier to build the new house. Finally the Spokane Alumni Club located one who was willing to invest in a new fraternity house. Dr. Lawrence C. Pence a M.D., from Spokane, invested $169,000.00 in the new house of which the total cost of building and furnishing was $225,000.00. The remainder of the cost was financed by alumni donations, the national fraternity, and local chapter funds.

In early May of 1964, the old house was torn down and the present house was built on the same lot. By Fall semester of 1964, the house was finished enough so that formal rush could be conducted. Seven men were formally pledged and twenty-five were informally pledged that semester, and so, Washington State Chapter of Delta Upsilon entered a new era.

In 1978 the WSU DU Alumni Association purchased the house from Dr. Pence and currently retain ownership. The mortage was paid off in 1993.