Joseph Smith's family 90 Minute Bread Recipe

Wow I've had this recipe for a long time, when I was living with my cousin in Rexburg, I went to a Relief Society homemaking meeting and they served this bread.  We also learned it came from Joseph Smiths family so it must be good right? It's the only white bread recipe I've made and it is a wonderful recipe, perfect for the winter,  wonderful to toast and put Nutella on or our incredible raspberry jam also good to make sandwiches with, I also love it with homemade soup, What a wonderful way to make your day!
                     90 minute Bread
To 4c. Very warm water (105-115F), add 4tsp. Salt, 8Tbsp. Sugar, 4Tbsp. Cooking oil and stir.  Then add 4Tbsp. Yeast.  Let set about 20 min.(I usually let it sit until I can get to it and the yeast looks like it growing good).  Add 5c. Flour, and 1/2c. Potato flakes(I will add 1c., or instead you can add mashed potatoes, also for the water use potato water for a softer bread).  Beat into a smooth batter, add more flour if needed,  be careful not to add too much, just enough so it will hold its shape and not too sticky.  Divide into 4 parts  then beat with a spoon( that's what they did in pioneer days, it's to get the air pockets out. Let set for 20 min. Mold into loaves and place into greased bread pans.  Let raise for 30 min.  Bake 375 F for 25 to 30 min or until bread is done .   Can you just smell it now?