Worlds Fair New York 1939

I have gone crazy on ebay lately. I have purchased many stamp lots. One was a lot of World Fair Stamps 1939. They were stuck together from being in an envelope for many years. I saw this as a challenge. I received them yesterday in the mail and to my dismay found out that they are not postage stamps. They seem to be memorabilia stamps. There were over 20 of them. I still soaked them and painstakingly separated them. I have been researching for a day now and found nothing. Value, origination, number in a series.....nothing. Does anybody have any info on these stamps?

I will post the pictures shortly.

Thanks