Laura, PowerPoints with photos or graphics are FAR better than Word-Only
presentations.  Yes, sometimes ya gotta have words ... but  you know that
old adage: An picture is worth a thousand years.

With all due respect to your DH, whether or not YOU are getting paid has
nothing to do with whether you may use an image that is copyright-owned by
someone else. "Fair use" and "Fair dealing" are often claimed ... by folks
who do not practice in the area of  intellectual property law, and are
relying on less-than-reliable sources.

The Copyright Office of the U. S. Govt has buckets of very user-friendly
materials.  I urge anyone with an interest to skim their website; there are
FAQs about seeking copyright permission
http://www.copyright.gov/help/faq/faq-fairuse.html#permission

My recommendation: Just Go Back And Ask.  If you contact the original owner
of the photo, and explain the context in which you are going to be using
the image (teaching context, I won't be selling the image; I will be paid
(or) the conference attendees will pay to be there; I will cite you as the
author/source;  I will/won't let the image be reproduced in handouts that
will go home with attendees yadda yadda yadda) I'd bet you dollars to
donuts the creator will let you use the image.  In all of my years of
PowerPointing, I have only ONCE been refused ... and even then, I wasn't
refused, but I was just not willing to spend a coupla hundred bucks for
rights to use one photo.

Your alternate route is to find pictures that you KNOW are copyright-
and/or royalty-free.  That means you know you have permission up front from
the originator to use them ... or you don't need permission at all (the
materials in "in the public domain," usually meaning it is very old).
 Peruse Flickr's Creative Commons pages
http://www.flickr.com/creativecommons/ -- click the part that talks about
rights -- and I suspect you will find more than enough options.

I did a webinar for ILCA in June called "Two Wrongs Don't Make a
Copyright;" if you want some E-CERPs and more info about intellectual
property law than you ever thought existed, you can order a recorded
version from the website.

-- 
Liz Brooks JD IBCLC FILCA
ILCA President (2012-14)
Wyndmoor, PA, USA
Twitter: @LizBrooksIBCLC
FB: www.facebook.com/LizBrooksIBCLC

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