I am making a garden area for my adult son (he is severely mentally disabled) just outside his bedroom widnow since he spend alot of time there, he doesn't get to go out much. I found a pic of the sweet little set online but cannot find it for sale anywhere. I suspect it is discontinued. Does anyone know where I may find one??

No, but have you considered making your own out of the modeling plasticine clay people bake? It was very popular for jewelry a few decades ago. I think it is still around. If your son is able to help roll it out, he might enjoy making them with you. If he has limited motor skills, he might enjoy watching you make them.