Between 1965 and 1975, Marcelle Ferron's life was marked by intense artistic activity with growing recognition for her work. While still in France, Ferron met the master glassmaker Michel Blum who introduced him to the art of stained glass.

Upon her return to Quebec in 1965, Marcelle Ferron undertook laboratory research aimed at adapting the design of stained glass windows to Quebec climates. In subsequent years, the artist was asked to create works of public art. These stained glass windows stood out for their bold use of color and their ability to play with light, creating visually impressive spaces.

From the year 1973, Marcelle Ferron made a return to painting without however leaving stained glass. Moreover, in 1975, she created the one for the Amos courthouse in Quebec. That same year, she exhibited at the Equinox Gallery in Vancouver and at the Les Multiples gallery in Quebec City, among others.

The untitled work from 1975 is characteristic of this period. Light, vibrant and metallic colors appear little by little in Ferron's work. With a renewed color palette, the artist retains all of his ample and free gestures. Calligraphic black strokes are also appearing, reminiscent of Asian traditions. She managed to create in the works of this decade a whole new light and radiance inspired by her glass achievements.