Gravengaard, N. P. (Niels Peter), 1865–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2420245A
- pdbooks.info ID: 5096
N. P. (Niels Peter) Gravengaard Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
| ||||||
| A Christmas gift to the American home and the youth of America | 1920 | Author | |  | |  | |    
| |