I found a census record entry for this family: 1900 United States Federal Census > Pennsylvania > Cumberland > Carlisle Ward 1 > District 2 Benjamin Lutz b. 1875 age 25 b. PA occupation Butcher Viola L. Lutz b. 1876 age 23 b. PA Edna R. b. 1900 age 2/12 b. PA
In 1910 they are in the same town with all the children you mention. In 1920 they had moved to East Pennsboro and had increased adding, Mildred, Virgil, Zara, and Lucretia, all daughters. Edna and Mahlon were no longer listed. In 1930 the family grew by one more: Betty, age 6. Not listed are Edna, Malon, Harry, or Martha.