Lambert M. SurhoneISBN: 978-3-6399-9632-6;
Tolga-Os is a former municipality in Hedmark, Norway. It was the result of a merger between Tolga and Os on January 1, 1966, during a nationwide municipality merging process. The municipalities had previously been united under the name of Tolga, but Os had become a separate municipality in 1926. Before the creation of Tolga-Os, the two municipalities had a population of 1,;944 (Tolga) and 2,015 (Os). On January 1, 1976 Tolga-Os ceased to exist as Tolga and Os became separate municipalities once again. At this point Tolga had a population of 1,865, whereas Os had 1,859 inhabitants.
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