Dear Debra,

Thank you for contacting Mearto with your appraisal inquiry. The presented object appears to be a pastel on paper with the measurements of 10 x 13 inches. The drawing depicts a landscape and is signed which with the name Joan Hartenstein and dated 1970. Sadly no further information regarding the biography of this artist is mentioned in reference books or similar databases.
This piece is in good condition and there are no serious damages visible.
An estimation would be between 10 to 20 USD.
This estimation is based on actual recent past recorded auction sales of comparables. Retail "asking prices" can be higher and vary.

With kind regards,
Georg