Administrative chronology

• 1889 - Proclamation creating Trudel township
• 1891 - Proclamation creating Laure township
• 1901 - Proclamation creating Bickerdike township
• 1904 - Proclamation creating Gendron township
• 1 - Constitution of the municipality of Lac-Edouard from the entire territory of the townships Bickerdike, Gendron, Laura and Trudel.
• 26 - Lac-Édouard is fused to La Tuque
• 1 - Reconstruction of the City of Lac-Edouard in the former territory of 1951.

Sanatorium

The sanatorium of Lac-Édouard, which had been in operation from 1904 to 1967, contributed greatly to the local economy. The five historic buildings on the site were built between 1910 and 1926. Tunnels built in cement were used in particular to get the pipes coming from the boiler and from raised huge reservoir of drinking water. The main tunnel was used for the movement of personnel, supplies and, if necessary, to remove the dead bodies from the hospital.

The primary purpose of the sanatorium was to house and treat tuberculosis patients. This infectious disease, with variable clinical signs, was once treated in sanatoriums, for cures under the sun and outdoors activities. The disease was much better controlled in the 1950s, thanks to newly discovered antibiotics. Subsequently cures to sanatoriums in the fight against tuberculosis became less and less necessary.

Located on a point of land jutting out into the Lac Edouard, the site of the sanatorium and outbuildings was well equipped. The natural setting, on the edge of the lake, attracted beneficiaries, generally wealthy. They arrived by train at the Lac-Edouard railway station by train, from Hervey-Jonction, Quebec or Chambord. A shuttle was required between the railway station and the sanatorium. Many visitors were coming by train to see their sick relatives or friends living at the sanatorium. Many beneficiaries of the sanatorium died there during its history.^[5]

After 1967, the sanatorium served as a hospital dedicated to military veterans. Then, the building was transformed into a center for people with intellectual disabilities. Finally, the sanatorium was closed in 1982 and abandoned, thus weakening the local economy. The building of the sanatorium had four floors (wearing a turret as the fifth floor), with a solid concrete structure, exterior walls in red brick and many windows all around. Religious and lay staff nursed hundreds of resident beneficiaries. Doctors, nurses and support staff were housed in adjacent buildings or houses in the village of Lac-Édouard. After 1982, this historic site (except the sanatorium) continued to be used for several years for tourist activities. Finally, the site became a ghost town.

On the night of May 10 to 11, 2013, a fire completely destroyed the building of the house of nuns, located a few hundred metres from the sanatorium.^[6] This large house had a large atrium, two stories high, at the entrance. The rooms of the nuns were furnished on the second floor.

In 2006, businessman Jean-Guy Pronovost from Trois-Rivières acquired the site and outdoor base from Ministry of Natural Resources and Wildlife.