No need, subpoenas are obvious and in fact of they aren't obvious they aren't a subpoena. Almost every subpoena from Congress the Senate or otherwise will have some variation of "subpoena duces tecum" in the header or the phrase you are "ordered" or "commanded" to appear or provide whatever.

To Nixon https://www.justsecurity.org/61535/congress-subpoena-trump-testify/

Charles Mitchell https://www.senate.gov/artandhistory/history/common/investigations/image/Pecora_MitchellSubpoena_display.htm