Have only just seen this thread thanks to the MNHQ round up. I found a v similar book in my grandmother’s house which clearly belonged to her mother, published in 1912. It is completely fascinating and shocking at the same time. The author is clearly a man, and apparently:
‘the companion volume is entitled Babyhood - baby’s first year, his troubles and trials and how to meet them’ (sadly no copy of that)
There are amazing adverts scattered throughout - Nurse Golton’s Cap for Prominent Ears for example, or Horrockses’ Longcloths, Nainsooks, Cambrics, Madapolams etc 
.
Some highlights:
During pregnancy ‘the expectant mother must be carefully protected from the shock of evil tidings, any such information being told her with all the tact and sympathy which her husband can command. She should be prevented from reading the morbid, nauseous, problematical and altogether unnecessary and unwholesome literature which is so prevalent today, pictures and spectacles likely to rouse excitement or resentment should be avoided, visits to theatrical productions of a melodramatic nature are unwise, and all objectionable sights and sounds should be kept from her notice’.
‘Alcoholic beverages are best avoided, but if it is customary to take some stimulant, a little light claret or hock is the most suitable’. Spicy food, pastry, ‘rich sweets’ are to be avoided, and meat only eaten once a day, but that section concludes with quite sensible advice: ‘above all avoid fads, hearken not to the advice of food fanciers, do not allow questions of food and drink to obsess the mind, and be moderate in all things’.
Re maternity clothes: ‘pregnancy must interfere with the contours of the figure and any attempt to preserve this by rigid stays is wicked folly, bringing harm to mother and child ... The best advice is that the corsets should be given up as soon as the mother’s comfort necessitates any loosening of the lace’.
During labour ‘the mother’s dress should consist of a woollen vest, a warm nightgown, a knitted bed jacket, and pair of stockings, and, worn under the nightdress, an old flannel petticoat. The object of the petticoat is that the nightgown may be tucked up and kept clean, so there will not be the disturbance of changing this garment once the confinement is over’.
As in the 1960s the mother stays in bed for several days after the birth: ‘for the first two days she should keep in the recumbent position, turning on the side occasionally for a rest. On the third day she may be propped up a little on pillows, and may carefully move her legs about. For the fourth day she may sit up, supported by pillows, for a few moments and she may move her limbs about more freely, but being careful not to separate her thighs too far apart’ (slight difference to me walking home from hospital - only a couple of streets admittedly - the next day!)
The whole thing is fascinating - thank you for sharing yours OP.