Porsche Factory posters

[prbsurf7]

Hi pelicans,
Happy new year! Looking for information. I have some factory Porsche posters that I can't identify where they’re from and how they were used? I can’t find any like example's on the inter webs. Just ones with more text on specific models. Some are full frame, others have border w/Porsche crest. Many eras covered. Many cool race car studio portraits. They are more stylish and photogenic than the average dealer advertising posters I’ve seen. Any help in identifying them would be greatly appreciated.
Thanks prbsurf.

[voitureltd]

I have the same ones as #5 and #6. They came with about 25 or so of other photos that I got with a 66 911 that the owner spent lots of time at the factory with when he was the president of the Rocky Mountain region Porsche club.in that time. As I recall the photos were taken by an authorized Porsche employee for possible candidates for Porsche calendars. They were loose with the many complete calendars I received that were from that time. He took his 66 911 that he bought new with him in the cargo plane when he flew to attend Porsche events in Germany and would go to the factory to collect memorabilia to auction off for revenue for the club and concours events he participated in. Enclosed are a few photos of some of the events he participated in before I got the car from him about 20 years ago.

[DGW]

They look like Porsche calendar pictures to me.

[Matt Monson]

A couple of those look like Jeff Zwart’s work. But no idea on value.

[prbsurf7]

Thanks much for helpful info. Matt Monson, DGW and voitureltd.