Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
John Grazier
Table title:
Selected works
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Medium </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Collection </th><th colspan=1 rowspan=1 > Dimensions </th><th colspan=1 rowspan=1 > Image </th><th colspan=1 rowspan=1 > Reference </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > House on a Hill in a Dream </td><td colspan=1 rowspan=1 > Pencil on paper </td><td class="highlighted"  colspan=1 rowspan=1 > 1974 </td><td class="highlighted"  colspan=1 rowspan=1 > Smithsonian American Art Museum </td><td colspan=1 rowspan=1 > 16 x 28 1/2 in.(40.6 x 72.4 cm) </td><td colspan=1 rowspan=1 > "House on a Hill in a Dream" </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Memory of a Porch </td><td colspan=1 rowspan=1 > Lithograph </td><td class="highlighted"  colspan=1 rowspan=1 > 1976 </td><td class="highlighted"  colspan=1 rowspan=1 > Smithsonian American Art Museum </td><td colspan=1 rowspan=1 > 22 x 30 in.(55.9 x 76.2 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Memory of a Porch </td><td colspan=1 rowspan=1 > Lithograph </td><td colspan=1 rowspan=1 > 1975 </td><td colspan=1 rowspan=1 > National Gallery of Art </td><td colspan=1 rowspan=1 > 22 1/8 x 29 15/16 in.(56.2 x 76.1 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Breaking Up </td><td colspan=1 rowspan=1 > Lithograph </td><td colspan=1 rowspan=1 > 1976 </td><td colspan=1 rowspan=1 > National Gallery of Art </td><td colspan=1 rowspan=1 > 22 1/8 x 30 1/16 in.(56.2 x 76.3 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > End of the Line </td><td colspan=1 rowspan=1 > Graphite with touches of erasing on paper </td><td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Art Institute of Chicago </td><td colspan=1 rowspan=1 > 26 3/4 x 36 2/3 in.(68 x 93.5 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Untitled </td><td colspan=1 rowspan=1 > India ink on paper </td><td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > The Pollock-Krasner Foundation </td><td colspan=1 rowspan=1 > 40 x 60 in.(101.6 x 152.4 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Rattling Windows </td><td colspan=1 rowspan=1 > Pencil on paper </td><td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > The Pollock-Krasner Foundation </td><td colspan=1 rowspan=1 > 30 x 40 in.(76.2 x 101.6 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Cop Motors at Rest </td><td colspan=1 rowspan=1 > Aquatint Etching </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > National Law Enforcement Museum </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Passing Windows in Fall </td><td colspan=1 rowspan=1 > Graphite on paper </td><td colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > The Hechinger Collection </td><td colspan=1 rowspan=1 > 28 x 38 in.(71.1 x 96.5 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > City Lines </td><td colspan=1 rowspan=1 > Graphite on paper </td><td colspan=1 rowspan=1 > 1978 </td><td colspan=1 rowspan=1 > Rose Art Museum </td><td colspan=1 rowspan=1 > 8 x 23 in.(20 x 58 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Reflections of Mount Rushmore </td><td colspan=1 rowspan=1 > India ink airbrush, photographs </td><td colspan=1 rowspan=1 > 1991 </td><td colspan=1 rowspan=1 > Lobby of 1100 New York Avenue NW Washington, DC </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Rebecca’s Doll House </td><td colspan=1 rowspan=1 > Oil on canvas </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Truland Systems </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Burning Bush </td><td colspan=1 rowspan=1 > Oil on canvas </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Truland Systems </td><td colspan=1 rowspan=1 > 30 x 40 in. (76.2 x 101.6 cm) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > The Visitor </td><td colspan=1 rowspan=1 > Oil on canvas </td><td colspan=1 rowspan=1 > 2001 </td><td colspan=1 rowspan=1 > Hogan Lovells, formerly known as Hogan & Hartson </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
Which of John Grazier's works are in the Smithsonian American Art Museum?
Answer:
John Grazier's works, “House on a Hill in a Dream” (1974) and “Memory of a Porch” (1976), are in the collection of the Smithsonian American Art Museum.