Try the free search tool at https://familysearch.org/
You didn't give any dates/approximate dates or possible names. Here are a few examples of what was found by inserting last name Luedtke, born MD 1880 -1940. Maybe some name will look familiar and you can plug that individual into the search parameters.
Good Luck
US Census 1940 Election District 5, Anne Arundel, MD
https://familysearch.org/pal:/MM9.1.1/K76N-TG4
head Martin Luedtke M 44 MD
wife Edna Luedtke F 44 MD
U S Census, 1930 Election District 5, Anne Arundel, MD
https://familysearch.org/pal:/MM9.1.1/X3WM-PBL
head August Luedtke M 25 MD
mother Caroline Luedtke F 69 GER
granddaughter Marie Luedtke F 14 MD
grandson Otto Luedtke M 16 MD
grandson Floyd Luedtke M 8 MD
U S Census, 1910 Election District 3, Anne Arundel, MD
https://familysearch.org/pal:/MM9.1.1/M2XV-TMY
self Charles R Luedtke M 33y GER
wife Mamie R Luedtke F 35y MD
U S Census, 1910 Brooklyn, Anne Arundel, MD
https://familysearch.org/pal:/MM9.1.1/M2XK-WDX
self Charles K Mangam M 63y MD
wife Sarah E Mangam F 60y MD
son Charles W Mangam M 30y MD
son Albert K Mangam M 28y MD
son Harry Mangam M 22y MD
dau Sadie Mangam F 23y MD
son-in-law Hugo Luedtke M 27y GER
wife Lydia E Luedtke F 20y MD