Final answer:
The reference provided does not contain any information regarding the Old Minnehaha County Jail or the number of dormers on its façade. Therefore, an accurate answer cannot be provided without the correct and relevant data.
Step-by-step explanation:
The question refers to the Old Minnehaha County Jail and the sheriff's residence, inquiring about the number of dormers that are part of its façade. However, the reference text provided does not discuss this specific building or dormers at all; instead, it describes an old house with Colonial lines, a porch, and a rural setting with cattle and countryside. Due to the lack of relevant information in the reference about the Old Minnehaha County Jail, it is not possible to provide an accurate count of the dormers or other architectural details pertaining to that building.
Therefore, I cannot confidently provide an answer to this question without the correct reference information. To obtain the correct number of dormers on the Old Minnehaha County Jail's façade, one would typically need a reliable historical or architectural source that directly addresses this detail about the building in question.