All this glass from digging by hand in just a small spot in my garden

The last 6 years I've been clearing around a farm house on what was my grandmother's farm. Leased / rented by those outside our family from 1937 to 1998 and built around 1906. So far I've taken 53 thirty gallon trash bags of beer & soda bottles (glass) and 7 large cardboard boxes of broken glass to recycle. Still find more after every rain.