Because your institutions are members of the SPN, undergraduates have access to free affiliate membership, which includes eligibility for travel fellowships of up to $5,000, eligibility to present at the convention, and access to events aimed at undergraduate students. You just need to identify their institution when you join, and they'll see $0 as the dues rate for undergraduate affiliate members.

MLA: Modern Language Association: Undergraduates have access to free affiliate membership, which includes eligibility for travel fellowships of up to $5,000, eligibility to present at the convention, and access to events aimed at undergraduate students. Please identify “Dartmouth College” when you join, and the dues rate will be zero for undergraduate affiliate members.

ACLA: American Comparative Literature Association. Find resources about call for papers, conferences, professional networking.