from ftplib import FTP
ftp = FTP('gis.arkansas.gov')
ftp.login()
ftp.cwd('Elevation')
ftp.retrlines('LIST')

>>> ftp.retrlines('LIST')
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 AGFC_RAW
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 AR State Parks
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Bayou Meto Lidar Phase I
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Bayou_Meto_Watershed
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Beaver_Lake
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Beaver_Tailwater
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Black_River
drwxr-xr-x 1 ftp ftp              0 May 30 09:24 Blue_Mountain
# ... And so on ...