The article is a substantive review of the fonds of the Archives of the Republic of Slovenia which served to the author as a fundamental source of studying social and health protection of mothers and children in Slovenia in the inter-war period, in the context of the entire social and health issue in the broad sense. The main focus are the following fonds: ARS 64 Regional government of Slovenia, Social Care Section, ARS 92 Regional Committee of Ljubljana authority, ARS 93 Regional Committee of Maribor authority, ARS 77 The Ban council of Drava Banovina, ARS 2032 Zavod za gluhe in naglušne Ljubljana, ARS 2052 Deaf and Hard of Hearing Clubs Association of Slovenia, ARS 427 Državna bolnica za ženske bolezni v Ljubljani (State hospital for female diseases and obstetrics in Ljubljana), childbirth protocols 1941-1945. The results of her research the author published in her doctoral thesis Social and Health Protection of Mothers and Children from 1919 to 1939 in the Territory of the Former Drava Banate and in academic literature. In the introductory part, the article gives an overview of social policy administration in Slovenia in the inter-war period since knowledge of administration facilitates better understanding of used sources. The next part of the article focuses on the representation of shorthand minutes of authoritative assemblies and the ban council which were instrumental in researching the social and health conditions as they expose the problems of authority and later banate without glossing over them. One of the consistent topics of discussion was the problem of limited spatial capacities of special education institutions. The author presents the issue of the Zavod za gluhe in naglušne Ljubljana (deaf-mute institute in Ljubljana). The final chapter is dedicated to the fond of the State hospital for female diseases in Ljubljana, which also contains childbirth protocols. The latter helped the author provide statistical statement of illegitimate births during interwar Ljubljana.