In 1919, Edmond Archambault became the store's sole owner, and in 1930, he decided to move to the corner of Berri and Sainte Catherine Streets, where he built a seven-storey building, which he dubbed the "House of the Future" [2] and served as the home of Archambault Group's main office.

Started in 1978, at its peak, Camelot-Info had six stores and an online shopping site, with 10,000 titles in its inventory.

In February 2018, the total size of the flagship store was reduced by almost 25 percent due to decrease in sales attributed to the rise of e-commerce.

[13][12] Among the portion of the store that was shut down was the historic 500 Saint Catherine East building that had been home to Archambault since 1930.

[13] Despite having sold the retail chain to Renaud Bray in 2015, Quebecor had remained owner of the building and took the occasion to move its online radio station QUB to the space vacated by Archambault.

[14] On November 27, 2018, the iconic Archambault signage was removed from the building, a move that drew so much criticism that it was reinstated nine months later.