Alright, time for trivial calculations. 

[u][b]Food Required to feed the Tackett Farm and all of its employees[/b][/u]
Henry Tackett approximately has about 50 or so workers under his employment along with himself and his two daughters and his wife. The minimum amount of people on the farm is about 54 people while the maximum amount from that statement is about 63 people. 

The amount of food required to feed all of these people is hard to calculate due to the relatively normal distribution of the age of workers along with the chaotic variables of the Tackett family's diets. From a research paper detailing nutrition in the U.S.A from 1900 to 1974, the average American ate around 3260 calories of food per day during this period. This meant around 429 grams of carbohydrates, 51 grams of animal protein, 39 grams of vegetable protein and 134 grams of pure unadulterated fat per day. Assuming that Tackett is a business man who isn't on the level of Mr Burns when it comes to worker safety, we can do a relatively simple arithmetic solution. 

Minimum calculation - 176040 calories per day. 

Maximum calculation - 205380 calories per day. 

(Revision coming soon...)