This DFG-funded research project studied a large corpus of cultural magazines of the Spanish-speaking modern age in Spain and Hispanic America. The research project started in 2017 and lasted until 2020; its project number is 327964298. Two sub-projects, one with an emphasis on Modernismo (1890-1914) and the other one with an emphasis on the avant-garde (1920-1936), were implemented, crossing fields during the transitional phase of the so-called Posmodernismo (about 1910-1920). Both sub-projects were closely connected and were designed to serve the following objectives: 1. Processes of the development of modern literature and its transnational dimension were studied by consistently comparing inter-cultural connections, thus underlining the status of the cultural magazine as a crucial medium of the dynamics of modernization. Within the project continuities and ruptures within these dynamics in Spanish-speaking literatures have been examined, which necessarily could only be partially considered in the prevailing epoch-centered studies on Modernismo and avant-garde so far. The high level of transnational networking, which is characteristic for the "cosmopolitan" Modernismo as well as the "international" avant-garde, was supposed to finally become the object of research, after this phase of studying magazines mostly as part of the national philologies. 2. In conducting this new field of research methods already established and theories on cultural transfer have been used to study modern literature outside the confines of national boundaries, in order to expand their reach to the medium of the cultural magazine. 3. Cultural magazines have been regarded as networks consisting of forms of texts, which do not only connect single contributors, but genres and types of texts as well. To research this aspect of magazines as networks, qualitative analytic parameters that require a close reading of carefully selected parts of the magazines have been used, as well as quantitative methods which are based on the entry of (meta-)data of reviews and their visualization. The dataset submitted here consists of explanatory texts, 16 data sheets comprising about 31,500 datasets, and of several visualizations. The project maintains its own virtual research environment named "Revistas Culturales 2.0", which is available at https://www.revistas-culturales.de/.