TIC-Collaborative was a collaborative digital humanities project that focused on transnational intellectual cooperation (TIC) in the long nineteenth century, in particular on transnational connections in the field of social reform. The dataset contains information on over 1650 international congresses and 450 organizations and conference series related to the social question. More information in: Verbruggen, C., Deroo, F., Blomme, H., D’haeninck, T., Thiry, A., van Diem, L., Vandersmissen, J., Mestdagh, E., Billiet, B., Wolff, J., Chambers, S., De Potter, P. D., Carlier, J., Van Praet, C., Leonards, C., & Randeraad, N. (2022). Social Reform International Congresses and Organizations (1846–1914): From Sources to Data. Journal of Open Humanities Data, 8: 13, pp. 1–13. DOI: https://doi.org/10.5334/johd.69