Here is a transcription of the actual 1850 census image provided earlier by another poster, plus the 1860 census:
1850 US Census, IA Dubuque District7
David Jones, 38, Carpenter, NY
Mary Jones, 20, MD
Emma Jones, 4, IA
Margaret Maloy, 19, PA
1860 US Census, CA SanFrancisco SanFrancisco
David Jones, 55, Butcher, real property [blank], personal property $500,
Mary A Jones, 37, MD
Nelson, 3, CA
Emma, 14, IA
Wm. Tell/Fell, 32, Sweden