Steven Zahm@ David
I just tested the last CSV file you had attached. All images were imported for me without issue. My first suggestion is to review the entries after they have been imported by clicking the edit link for each, one at a time. Check the logo and photo fields to verify the image was imported.
The 2nd row in your CSV only has the photo URL and not a logo URL like the other two. So, depending on what you have the admin set to show (via the Screen Options), you might only being seeing the logo on the Manage page. And since the second CSV row individual has no logo, there would be logo shown on the Manage admin page. So, it is important to review while editing the entry so you can see both images. Alternatively, you could toggle the display of the logo/photo on the Manage admin page in the screen options.
Hope this helps!