The nursing relationship that I share with my 19-month-old son is precious to my family. Growing up in a rather conservative mid-western environment, I saw women breastfeed their young babies until about six months, but I mostly remember babies being fed with bottles of formula or with cow's milk, not their own mother's expressed milk.
From talking with my mom now, this really was a sign of the times. My mom remembers our pediatrician telling her that her breastmilk stopped being nutritious and beneficial after six months. Also, pumping or expressing her own milk was not something that she or other women in her circle did, or were made aware of. Cows milk with a little Karo (a brand name corn syrup) syrup was what she transitioned us off of the breast with in the 1960s and 70s when my brothers, sister, and I were born.