Sorry but your husband is wrong @MumWifeOther - he can be offended of course, anyone has the right to be, but he is wrong that Baa Baa Black Sheep has any racist origins.
It refers to the wool taxation system that died out around the 15th century, where the King took a third of the value of each bale or bag of wool. Hence, the song divides up the wool into 'three bags full'. Master here refers to simply the landowner or the king (the landowner would collect taxes from his tenants to pass to the king).
Black sheep were significant to people at the time, because whilst black wool would not take a dye for fancy coloured cloth, it did also mean people could make black and white yarn and weave patterned cloth and knit patterned fabric without needing expensive dyes.
This has been done to death since the mid 1980s and people have looked very very hard to find racist associations or meaning in the origins of the rhyme, and they have failed to do so.
More disappointing is the idea that Tigger from WTP is racist - Tigger is a childs toy, a new addition to a small boys collection of stuffed animals, in the original story (again I discount Disneys frankly revolting treatment of the characters, I am talking about the original stories) the animals of 100 Acre woods, work together to find out what Tigger likes to eat best as, despite claiming that he likes everything, it turns out he doesn't like any of the things he tries until he tries the 'strengthening medicine' (malt extract) that Kanga feeds her baby Roo.
Subsequently, Tigger is effectively adopted by Kanga and lives with her and Roo.
Far from a racist tale, its a lovely tale of a newcomer joining an existing group of friends and being helped and taken in by them!