Former tramway station in Elm
Elm is first mentioned in 1344 as Elme.
The baths at Wichlen were in use since the middle ages and are first mentioned in 1547. They were very popular until they were buried by an avalanche in 1762. Many characteristic wooden structures have survived.
In 1799, Russian General Alexander Suvorov and his troops stayed the night in Elm before crossing Panix Pass to Pigniu on their retreat into Austria.
By 1861, slate quarrying was taking place. On September 11, 1881, an avalanche caused by excessive quarrying of slate killed 114 and buried 83 structures in the municipality.
In 1892, the owner of a spring in Elm that had long been hailed as beneficial was found to be rich in iron. The owner opened a bath house and sold the water bottled in demijohns, but the bath house was destroyed in an avalanche in 1907. In 1898, a new Kurhaus was opened, which flourished until World War I. Today, it is used as a retirement centre. In 1929, the company
Mineralquellen Elm AG was founded to bottle the spring water, and this continues to this day.
In 1879, the valley of the Linth river was connected to the Swiss railway network by the opening of the Swiss Northeastern Railway line from Weesen, but Elm, in the side-valley of the Sernf river, remained unserved. This impacted the local economy, and various proposals were brought forward to provide rail service to the Sernf valley. Eventually, on 8 July 1905, the Sernftal tramway, a metre gauge roadside electric tramway, was opened connecting Schwanden with Elm and other intermediate communities. Service on this line continued until 31 May 1969, when it was replaced by road services.
On 1 January 2011, Matt became part of the new municipality of Glarus Süd.