Dear Valerie,
    What i suspect you are talking about is tole painting.  This is a method
of combining a few basic brush
strokes to make an unlimited nunber of 'simple
line' pictures.  This is often done on metal with acrilic paints, but
neither is a limitation.    Its first cousin is rosemauling, which you may
have heard of.
    Tole painting is a lot of fun, but the larger brushes are unreasonably
expensive $12-  $20.    The best book i can think of is 'You Too Can Tole".
    Shalom,  the Lily Lady
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