[APG Public List] Help reading 1880 census

[Richard A. Pence]

The 1880 census has this familiy:

Census Place: Chester, Delaware, Pennsylvania
George A. PENCE Self M M W 38 MD
 Occ: C. Mill Fa: MD Mo: MD
Annie D. PENCE Wife F M W 28 NY
 Occ: Keeping House Fa: MA Mo: MA
Mary D. PENCE Dau F S W 15 MD
 Occ: Home Fa: MA Mo: MA
George A. PENCE Son M S W 8 PA
 Occ: School Fa: MA Mo: MA
William W. PENCE Son M S W 7 PA
 Occ: School Fa: MA Mo: MA

I have looked at the image at Ancestry.com, but my old eyes can't read it. 
Can someone check the places of birth for me - the children show parents 
born in Massachusetts in the above index, but the parents are shown as born 
in Maryland and New York. Does the original really have Mass. as the birth 
place of the parents?

Please reply only to me. Thaks.

Richard Pence