Transcription on back: "To Paul Ecke Poinsettias with sincere appreciation for your gifts of beautiful plants which added so much to our traditional holiday telecasts. Christmas 1981." Unknown signatures
Presumably members of the Hegg family (daughters of Franz Hegg), Norway. The Hegg family were partners of the Ecke Ranch in Europe for plant licensing.
From left to right: Paul Ecke Sr., Magdalena Ecke, Mildred Macphearson (Magdalena Ecke's best friend), Gertrude Fohl and her daughter Louise Fohl (long time family friends).
From left to right: Joel Goldsmith, Goldsmith Seeds, Joseph Fischer, Fischer Geraniums, Paul Ecke III, Tom Doak, Yoder Brothers, and Richard Goldsmith, Goldsmith Seeds. The Flower Fields Alliance included four independent flower breeders.