Increased diversity in religious affiliation took place in the 1970s. In the first year of that decade, Lutherans represented 60% of the faculty, but by the 1978–1979 school year made up only 45% of the faculty. That year, "other Christians" for the first time in school history outnumbered Lutherans. Mathews resigned as president in 1980, and in 1981 Reverend Jerry H. Miller, a Harvard University graduate and director of National Lutheran Campus Ministry, became the fourth college president. The fiscal year 1983–1984 recorded grants and donations at $3,250,000, including an individual gift of $1 million, the single largest donation to that date. With the new funds in hand, the school was able to construct three major buildings: The Pearson Library was erected in 1985, the Ahmanson Science Center in 1988, and the Samuelson Chapel in 1990. Construction of the Ahmanson Science Center meant that all sciences for the first time had adequate equipment and space to initiate significant research programs. The new library housed 100,000 books as of 1985.