[Steven Zahm]

@ Leah

Edit the card.php and card-single.php found in this folder:
../wp-content/plugins/connections/templates/card/

This is the code to add a logo image. Change logo to photo to switch between the two.

$entry->getImage(
    array(
        'image'    => 'logo',
        'width'    => 100,
        'height'   => 100,
        'zc'       => 2,
        'fallback' => array(
            'type'   => 'none',
        ),
    )
);

You should also read this tutorial on how to customize the core templates, making the changes update safe.

Hope this helps!