How did Laura's aunt and uncle arrive for Christmas? Did they have a horse and wagon like Laura?

From the text:

The day before Christmas they came. Laura and Mary heard the gay ringing of sleigh bells, growing louder every moment, and then the big bobsled came out of the woods and drove up to the gate. Aunt Eliza and Uncle Peter and the cousins were in it, all covered up, under blankets and robes and buffalo skins.