If you are doing work for a client who is authorized to display the logo, they can and should supply you with an authorized version. If you are doing work for a client who is not authorized to display the logo, you could find yourself in a pile of legal problems if you do the job.
If you read the EULA from Digital Art Solutions and the other accompanying information you will become aware that their logo collection is a convenience item and does not grant you the permission needed to use any of the logos in the collection. That permission must always come from the actual owner of each mark.
In fact, if you look at the various collections offered on their site HERE, you will find that their logo collection isn't even displayed. One reason is that they don't want to make it easy for the trademark owners and their attorneys to find the collection.
In case you're wondering how I know what I've posted, my company published one of the first logo collections for the sign industry back in 1993. We did very well with it but we didn't understand the laws governing such products. We ultimately found ourselves in a lot of trouble and at the mercy of an attorney for one of the mark owners.
That collection was withdrawn from the market, but not before it was republished with new logos added by Digital Art Solutions (previously known as Smart Designs) as well as OCA Enterprises which was owned by the former sales manager of Smart Designs.
These days, the largest logo collection in the world is available for free at BrandsoftheWorld.com. Before they will allow you to download anything though, you must agree to the following:
Downloading this artwork you agree to the following:
Around here the NCAA cracked down on several shops for making Huskers decals without
permission to use the tradmarked logo. I am guilty that I used to do it all the time, I figured who is going to bust us out here in nebraska. Well 3 shops in Lincoln got sued and had to pay some retrobution $$$.
I've always been careful as to what logos i design. But thinking this software was legit. And now its not is not cool. How was i supposed to find out? Our sign suppliers sold it to us years ago. No word from them either. At least you guys were clear. I give it up to signs101. I've learned alot since joining.