Multiple printings with increasing cover prices. Later printings by Last Gasp?
1st-6th have 0.50 USD price with variations in coloring or appearance (glossy vs matte finish)
7th-8th have 0.75 USD price with 8th saying "Produced by Keith Green" (inside front cover)
9th has 1.00 USD cover price, 10th has 2.50 USD cover price, 11th has 3.90 USD cover price
Inside front cover title page illustration with indicia information at bottom of page.
On back cover.