The following pressings from Canada are known to exist;
* COL PC 35318 - 1st pressing STOCK * COL PC 35318 - 2nd pressing STOCK * COL PC 35318 - 2nd pressing EXPORT STOCK * COL PC 35318 - 3rd pressing STOCK * COL HC 45318 - 4th pressing HALF-SPEED MASTERED PROMOTIONAL* * COL HC 45318 - 4th pressing HALF-SPEED MASTERED STOCK * CB 860605 - Unofficial Picture Disc * missing
All pressings came on red Columbia labels.
The 1st pressing is the only release, which has a pictured inner sleeve and a separate lyric insert.
The 2nd, 3rd and 4th pressings all came with a printed insert including the common photo (from OIS) and credits on the front and had the lyrics printed on the rear. The 2nd pressing printed insert has been made of thick cardboard but the 3rd and 4th pressings came with a much thinner variant.
The first two pressings have similar labels, underneath the label matrix you'll find '℗ 1978 CBS inc.', which can't be found on the 3rd pressing. Also the font used on the 3rd pressing varies completely compared to its two predecessors.
The 4th pressing is a unique release on its own. The promotional release has a golden stamp in both English and French language.
On all releases you can find the following information;