When researching information on a specific person, Biography Reference Center (Wilson Biographies Plus Illustrated) and Literature Resource Center can lead you to background information and books and articles about your subject. Wikipedia is also a great starting point that can lead you to other, more authoritative sources. The Encyclopeadia Judaica is an essential stop. Also search the library catalog, Portland State WorldCat, using the person's name. Make sure to try alternate spellings such as Abraham and Avraham.