Internships are helpful tools for college students to gain valuable work experience that increases their employability. While applying online is an option, the best inroads into internships are through personal connections made available through social capital. First-generation college students who have limited networks may lack the social capital that provide internship connections. Using Nan Lin's (1999) network model of social capital as a theoretical framework, the paper reviews intervention literature and presents the findings from an implemented intervention. The mentorship intervention focused on two points of impact, the preconditions and mobilization of social capital for its three first-generation college student participants. To address the preconditions of social capital, the study trained the student participants on networking skills and the value of social capital. To address the mobilization of social capital, each student participant was paired with one career-relevant alumni mentor participant for a mentoring relationship that created connections. The convergent mixed method, quasi-experimental, single group designed study leveraged three data collection methods: a pre/post-test, mentor/mentee journal reflections, and focus group. Though the small sample size limited the ability for comparative analysis of study data, the student mentees experienced several benefits of mentorship including: career advice, career insight, and help. Additionally, and critically important, the mentorship relationships increased the number of contacts for each study participant, ultimately enhancing their social capital. The study provides implications for practice within high school and higher education settings to create resources, programming, and instruction that supports first-generation colleges students in building social capital. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]