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Altair Design: Volume One; Special Patterns for Everyone to Colour. Quilting, tile, stained glass ideas.
Altair Design Pattern Pad: Bk. 2: Amazon.co.uk: Ensor Holiday, Roger Burrows: Books
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You can create an endless number of unique quilt designs using half-square triangles. Half-square triangles, also known as isosceles right triangles, tessellate perfectly and can be arranged to create stars, flowers, pinwheels, stripes, diamonds,...
Altair Design pattern pad/colouring book from 1976...Loved these.