Research on library impact on online-only graduate student success has been limited. This paper will present a structure to evaluate the effect early program instruction and contact with library professionals and library resources has on success metrics for graduate students in online-only graduate programs at a regionally accredited nonprofit online institution. This paper will explore how to build an assessment program to measure library impact on fully online graduate students, touching on selecting outcomes, data analytics, synchronous vs. asynchronous instruction, and cross-campus collaborations.