The Elisabeth-Charlotte Harling Architectural Collection consists of architectural drawings, photographs, specifications, correspondence, newspaper clippings, publications, and other materials organized in two series, documents and drawings. Most of the text of the materials is in German or French. The collection contains 171 drawings covering 18 different projects in which Harling participated while working in cooperation with several architectural firms, the State University and Building Department in Konstanz, Germany, and as an independent architect in France.

The drawings reflect Harling's activities as an interior designer and as an architect. The first folder contains original drawings (ink and pencil) while folders 2,3 and 4 contain printed drawings. The drawings reflect diverse projects, and include comprehensive floor plans, prospects, perspectives and several construction drawings. Additionally, several drawings document her work as interior designer.

During her career Harling participated in the realization of several important design projects while cooperating with diverse architectural offices, universities and as an independent architect. Some of these design projects are represented in the collection by drawings, publications, miscellaneous newspaper clippings, and photographs. In particular the collection contains a significant number of drawings and various related materials regarding the design of the Universitatsbibliothek in Basel, Switzerland (1962-1968). Harling participated in this architectural project while working for the architectural firm of Otto H. Senn. This design is documented with a significant number of original drawings (45), related publications, photographs of drawings and models, and newspaper clippings. Also included are several remarkable original hand colored drawings of the prospects and plans of the building.

While working for Suter and Suter, Harling helped in the design of the Swiss Credit Institute (1960) in Basel, Switzerland and in the realization of an office building for the upper management of Lonza, Lonza Highrise (1960), also in Basel. The two projects are documented in the collection through several drawings, photographs, and other miscellaneous material.

Finally, it is important to mention the drawings and related material regarding two projects that Harling developed while working with the State University and Building Department in Konstanz (Germany). As Architect in charge, she participated in the planning and design of the Central Functions for the new University Library (1969-1972) and in the design and construction supervision of the Natural Sciences Library (1974-1982) at the new University of Konstanz. The Universitatsbibliothek in Basel is represented in 45 drawings, the design for the Central Functions for a New University Library (1969-1972) of the Konstanz University in Germany in 25 drawings, and the Natural Sciences Library, 31 drawings.