Were they plain white, did they have the plant name already on them? Were they square at one end and pointed at the other?

The only kind I can think of that come in rolls would be affixed directly to the plant. Below is a link to Gemplers. (And here are some free periods for you . . . . . . I'm sorry, but it's easier to understand questions when punctuation is included :)

Here is a link that might be useful: Try Gemplers

Try growersupply.com. I have order from them & have fast service & good prices.Honeybee

Horticultural Products & Services Division
www.hpsseed.com

I've ordered seeds from them w/ wonderful results.

from their catalog (to give you an idea on pricing):

***WOODEN PLANT & POT LABELS***
Catalog # Length Quantity Price
53292 6"x5/8" 50 $3.45
100 $5.75
500 $21.95
1000 $34.95
53294 8"x7/8" 50 $4.95
100 $8.95
More sizes & prices but you get the idea. Here's the catalog description:

THESE ARE THE BEST GRADE OF PAINTED WOOD LABELS TO PROPERLY MARK YOUR PLANTINGS. lABELS ARE COATED WITH A SPECIAL WOOD PRESERVATIVE, WHICH RESISTS MILDEW AND ROT FOR LONGER LIFE. SMOOTH, DURABLE AND EASY TO WRITE ON.

Picture shows this is the kind that's square at top & tapers down to a triangle-like shape.

***POT LABELS***
"BLANK LABELS WITH SURFACE EMBOSSED FOR ACCOMMODATING WRITING PENS. PRINTED ON HEAVY, 20 MIL. STOCK. THICK ENOUGH TO BE INSERTED IN DENSE SOIL EFFORTLESSLY!

4" 250/$8.95 500/$17.95 1000/$29.95
5" 9.95 19.95 34.95
6" 14.95 24.95 39.95

Hope this helps!!!