From the Dr. Seuss Classic Book Characters Party Supply Collection. Dr Seuss Classic Book Characters First Birthday Cone Hats. Each package includes 8 party cone hats, themed with One Fish Two Fish on the front, also includes the children from Cat In The Hat and The Fox in Socks and reads, "Happy 1st Birthday." This product is officially licensed by Dr. Seuss Properties™ ©Dr. Seuss Enterprises, L.P. All Rights Reserved. Some assembly required.