> 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-side-bar-secondary-object-types.md).

# The Side Bar: Secondary Object Types

On the left-hand side bar, you will also find icons that represent the secondary Object types, Bibliography, Period, Location, Person, Style and Image:

<figure><img src="/files/Dah6dQstKyEXhLtbxQ7z" alt="" width="296"><figcaption></figcaption></figure>

To search the data in the Census related to one of these Object types, click on one of these icons. You can then carry out a search using the free text search bar or the Advanced Search function.&#x20;

Unlike the Primary Object types (Antique Monument and Postclassical Work), these categories can only be searched singly, not in combination.