An overview of the Linked Open Data Infrastructure for Digital Humanities in Finland (LODI4DH). The data and services of LODI4DH enable publication and utilization of datasets for data-intensive Digital Humanities (DH) research and applications in structured, standardized formats via open interfaces. LODI4DH is based on a large national collaboration network and software created following a number of research projects since 2003 and has spawned several in-use infrastructure prototypes.