The guide was produced by two DPLA Community Reps (Chad Nelson and Nabil Kashyap) over the summer and shared on the DPLA blog today.
From a DPLA Blog Post:
We’re excited to announce the release of a new Community Reps-produced resource, GLAM Hack-in-a-box, a short guide to organizing and convening a hackathon using cultural heritage data from GLAM organizations (Galleries, Libraries, Archives, Museums) including DPLA. We hope this guide will serve as a useful resource for those either unfamiliar with or inexperienced in pulling together a hackathon.
Direct to the GLAM Hack-in-a-box (18 pages; PDF)