Pictures needed for fundraising

Hi!

long story short : we’re working on an app that maps every accessible location, toilet, parking space, etc.. in a city.
We’ve come a long way, appeared on Belgian national television, have a beta-app and are currently screening a lot of locations in 5 major Belgian cities.
You can find all the info here : http://www.onwheelsapp.com

All this comes with a lot of networking and handshaking, a lot of fundraising and thanking volunteers.

For this reason we want to print christmascards, newyears cards en thank you cards to give to our volunteers and donators.

We need good pictures and/or art.

What are the copyrights of the pictures on this website? Some are really great :D Can we mail the authors?

Or if there is someone very motivated, if you would send us some pictures or art we can use for these cards we would be honoured and will seriously consider printing them.

Thanks a lot!
Rob from the on wheels team