Here's a few:
This gal is only 2-3 months along in this photo (bred for 2010 foal)
This is my app mare in 07 the afternoon of the day she foaled, I'm guessing probably around 6-7 hours before foaling:
Rear view of my old gal Star a few weeks before foaling in 07.. She always needed a "wide load" sign
My sister's mare this year, around 280 days, unfortunately she lost a black colt about 2 weeks after this photo:
Daughter/Mother grooming each other, taken in Feb. mare on left lost a colt in March, mare on right foaled a healthy colt on May 23rd:
Above mare on the night she foaled, amazing how you can see even in the photos how much she's relaxed/dropped off etc for foaling:
My app mare in February, foaled a filly at 305 days roughly on May 4th:
My sister's pintaloosa mare at 322 days: