> For the complete documentation index, see [llms.txt](https://docs.census.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.census.de/navigating-and-searching/data-sets-and-sources/the-sources-menu-primary-object-types.md).

# The Sources Menu: Primary Object Types

The **Sources** selection menu allows you to search the two primary Object types, Antique Monument and Postclassical Work, either singly or in combination. The menu can be opened by accessing **Choose a Data Set** to the left of the search bar. By clicking on the arrow, a drop-down menu appears with the list of the two primary Object types. These can be activated or deactivated by clicking on the respective boxes: 

<figure><img src="/files/dFncSq0fMp6VWzMd3ZJE" alt="" width="375"><figcaption></figcaption></figure>

IMPORTANT: Below the object types, the **Census** pool is displayed. This pool contains all records of the Census database. If it is not activated, it is not possible to search the Census database.