There have been bootleg workprints, telecine versions or even extended cuts of movies available unofficially. I remember having seen an extended version of Jurassic Park on VHS (probably a workprint) back in 1994-'95. Two of the prominent extra shots I remember are more dialogue in the conversation between Alan and Ellie after scaring off the kid and the two Ford explorers coming out of a garage behind/beneath the Visitor’s centre. I also remember the shot of a Raptor’s eye through the cage while it was being brought to it’s pen by the truck.
So, while searching for it across the internet, I happened to stumble across a guy who pointed me to a post on reddit.com where a guy had got hold of a very old bootleg VHS of Jurassic Park. However, the post is sadly 7 months old and the guy, who did not have a VHS player anymore has probably sold it off. I have e-mailed him to keep it and get it transferred to a DVD for preservations sake and am yet to receive a reply. I am providing a link to that thread (now closed) and an imgur post link where lot of images from the VHS (not screenshots) have been posted.
If anyone here has any knowledge regarding a bootleg version of Jurassic Park please share any information you may have on such rare versions of JP (any of the JP films for that matter), please!
Reditt link - https://www.reddit.com/r/VHS/comments/30nbqx/came_across_a_bunch_of_old_vhs_movies_including/
Imgur images - http://imgur.com/a/uf7Ao