A lot of poor images and information on your RetroStock website, the images are just old snapshots with a limited editorial social history use, it would not appeal to buyers of mainstream stock maybe a few could be used in education.
Every person and or body part in a Commercial image must have a signed and noted model release, those that do not should be licensed as rights managed and clearly state editorial use only, which as far as I can see you do not have for most of your people images.
On your FAQ:
Are there any restrictions on my use of the Retrostock photos that I download?
Yes. While Retrostock offers great freedoms and a wide ranges of uses, we do not allow the redistribution of our photos, or allow the use of our photos within products that are mass distributed in any type of archive format.
Can imagery by Retrostockbe used for commercial purposes?
Images by Retrostock are model released and can be used for commercial purposes.
David
