Bertha Mae Wallskog, living at 1323 Lake Ave., Plymouth since 1955, died of natural causes, at 4:10 a.m. on Sunday, December 29, 2002. Bertha died in St. Joseph Regional Medical Center, Plymouth. A lifetime Marshall County resident, she was 91 years old. Born in her family’s North Township home near LaPaz, on May 29, 1911 , she was the daughter of Benjamin and Dora Brown Kaser and attended North Township’s Waner School in rural LaPaz. On June 26, 1928, in L