Access attachments.yml within collection loop

[danklammer]

Is it possible to access attachments within a collection loop? I am trying to do something like this, but am having no luck. Thanks!

<ul>
    {% for author in site.authors %}

        <h5>{{ author.name }}</h5>
        {% assign photo = site.data.airtable.attachments[author.image] %}
        <img src="{{ photo.url }}" />

    {% endfor %}
</ul>