Unseen Lowry: a new side of the matchstick master - in pictures

Girl in stocks being whipped - by a smiling lady? Photograph: The Estate of LS Lowry

Painting of the head of a girl Photograph: The Estate of LS Lowry

Children walking up some steps Photograph: The Estate of LS Lowry

Girl in a miniskirt Photograph: The Estate of LS Lowry

Figures talking Photograph: The Estate of LS Lowry

Mother and child Photograph: The Estate of LS Lowry

Study of a football match Photograph: The Estate of LS Lowry

The Bear Gate Photograph: The Estate of LS Lowry

A page of anatomical studies focusing on muscles, arms and legs Photograph: The Estate of LS Lowry

Head of a girl in profile Photograph: The Estate of LS Lowry

Study of a bending nude leaning against a plinth Photograph: The Estate of LS Lowry

Pencil portrait: head of Tom Mallinson Photograph: The Estate of LS Lowry

Seascape with black coastline Photograph: The Estate of LS Lowry

The Boyne Estuary, Drogheda, Ireland Photograph: The Estate of LS Lowry