12th Solo Exhibition, Kumar Gallery, New Delhi, 1968
Without seeming to apply any rigid theory Om Prakash manages to communicate the theme of radiation. I like to look at these paintings as signals. Traffic signs and super-sensory cards are signal material : and so is stained-glass and shot skill. Even star-shine and diamonds give you the feeling of what might be called a space phase. Space has been phased in his paintings and the cycle and symmetry are those of colour. Duet for instance, has for its motive the transmission of energy. A square with an aura discharges its energy (or colour) into another square, which is inclined, and composed as two triangles, each functioning like a filtered prism. Each triangle responds in three shades of the basic individual colour. The adjacent, supporting V wedge – a reaction in the second remove-vibrates in four tones. This is done so subtly and logically that we have a kind of harmonic principle stated. I would list the splendid and exciting Transformation I and Transformation II and Locks Unlocked (Fig. 18 page 12) the last being the most picturesque of the three. Om Prakash has come a long way. This exhibition is really impressive for its restraint and painterly qualities.
Late – Richard Bartholomew, The Times of India, New Delhi, 18 November 1968.