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Leta's parents were Frank McCoy b abt 1883 in IL and Ruth b abt 1884 in KS, marriage was probably before 1910 census.
United States Census, 1910
Name: Frank A Mccoy
Residence: Olathe, Johnson, Kansas
Marital Status: Married
Race : White
Gender: Male
Family Number: 237
Page Number: 11
Household Gender/Age
Frank A Mccoy M/27y IL/IL/IL
Spouse Ruth M Mccoy F/23y
United States Census, 1920
Name: Leta L Mccoy
Residence: , Franklin, Kansas
Estimated Birth Year: 1918
Age: 2
Birthplace: Kansas
Film Number: 1820532
Digital Folder Number: 4300849
Image Number: 00650
Sheet Number: 2
Household Gender/Age
Parent Frank A Mccoy M/37y b. abt 1883 IL/IL/IL
Parent Ruth M Mccoy F/33y b. abt 1887 KS/Michigan/IN
Mazie V Mccoy F/8y b. abt 1912 KS
Leta L Mccoy F/2y 9m