Managed by Cornell University, arXiv is an open-access archive comprising over 2 million scholarly articles in science, mathematics, engineering, technology, and economics-related fields.
NSF-PAR is "the designated repository where NSF-funded investigators deposit peer-reviewed, published journal articles and juried conference papers" (from the website).
PubMed is an extremely comprehensive online database offered by the National Institutes of Health. PubMed facilitates citation searching across MEDLINE, PubMed Central (PMC), and Bookshelf. Some full text is available.
SpringerOpen is Springer's compiled portfolio of peer-reviewed open-access journals. Subjects include earth sciences, chemistry, computer science, environment, life sciences, physics, and more.
The National Institutes of Health (NIH) is a part of the U.S. Department of Health and Human Services and is responsible for medical research. The NIH is composed of several research institutes focusing on specific aspects of human health.
The Influenza Encyclopedia is a digital archive project started by the University of Michigan Center for the History of Medicine. The archive includes the stories of 50 U.S. cities and their experience with the epidemic, alongside images and an encyclopedia of archival materials.
This exhibit from Central Methodist Archives and Special Collections details a brief history of Morrison Observatory and provides access to digitized archival resources.
This exhibit from Central Methodist University Archives and Special Collections provides access to digitized archival resources from Stedman Hall of Science's history on the CMU campus.