They feature the famous Dionne Quintuplets, a tourist attraction near North Bay, where these five little girls' care was taken over by the province so that they could be raised in a healthy and happy environment while also on daily display in a zoo-like atmosphere. The dramatic story began with the first recorded birth of five babies.
After four months with their family, custody was signed over to the Red Cross who paid for their care and oversaw the building of a hospital for the sisters. Less than a year after this agreement was signed, the Ontario Government stepped in and passed the Dionne Quintuplets' Guardianship Act, 1935 which made them Wards of the Crown until the age of 18. The Ontario provincial government and those around them began to profit by making them a significant tourist attraction. https://en.wikipedia.org/wiki/Dionne_quintuplets
So these beautiful little girls are shown attended by their nurses as they play happily, have their lunch, even get their cod liver oil. (Mandatory for a child growing up in Northern Ontario, cod liver oil has me hating fish to this day.)
The high irony of using them as examples for a Spock style baby book keeps on giving. It speaks of bureaucratic overload, well-intentioned meddling, exploitation and greed not only on the part of the family but also the government. As a window in time, it also reveals the ways that baby care has and hasn't changed over the decades.