A large collection of midewewin (north american woodlands indian) pictographic birch bark scrolls and drawings is under examination. Originally splits and breaks in the bark were treated as for paper, using long-fibred tissue and nacmc. But the tissue needed tinting and also covered some of the image. Colouring the paper was not easy because it disintegrated and there was concern for possible subsequent bleeding through of the colour onto the object. Instead the glenbow museum started to use dyed silk crepeline impregnated with pva emulsion (vinnapas epi). A piece of coated silk is cut to size, the adhesive activated with ethanol then pressed into place. Because of the openness of the weave any image covered can be seen through it. A smaller repair is needed than with paper and adhesion takes place much faster, which is useful if the scroll also has to be manipulated.