Do you still have your catalog from the show? Maybe looking through the vendor names might ring a bell then you could email or call them. Unfortunately I just threw mine away over the weekend.

You asked about a "pencil" you saw but all the answers have talked about a pen. Which is it you saw?

I'm not interested in the friction pens ( yes, a bad experience! ). It was more like a "crayon" pencil type thing. Thanks so much for your help, though. Yes, I just threw away my book from the show last week :(

yes, yngldy! That's it! I just ordered it. Thanks.

I use Crayola ( no other brand as they do not necessarily wash out) of washable markers. The small pack has about 8 colors which can help with light & dark fabrics. Costs about $ 3.59 @ Walmart. Test fabric before using but not had any problems using them.

I have use the Frixion pens also. since I live in a colder climate and when I took the quilt outside to pack it for a quilt show and it got cold all the lines reappeared. I washed the quilt to get rid of all the marks.

I tested black Frixion pens on a project that didn't matter. First I washed the finished project to see if they would wash out. First wash was warm water and no detergent. Some marks remained. Washed again with detergent. Almost all the marks came out. Threw it in the hot drier and all marks were gone. For marking my quilts for handquilting, I still prefer my Fons and Porter mechanical pencil with colored leads, but sometimes they don't show up well enough. Then my marker of choice will be a colored Frixion pen.

I use Frixion pens and love them. You can buy them at Staples as well as quilt shops.

Clover makes a white wax-type marking pen that disappears when you iron it. I have used it on a Christmas tryptich and it disappeared easily.

I found Frixion pens at Walgreen's in the office section. I use mine all the time.