To honor his wife of 73 years and her commitment to family literacy, for which she raised over $110 million over the course of over 30 years, @GeorgeHWBush will be wearing a pair of socks festooned with books at today’s funeral service for former First Lady Barbara Bush. — Jim McGrath (@jgm41) April 21, 2018

The socks worn by the 41st President of the United States of America at today’s funeral for former First Lady Barbara Bush. pic.twitter.com/12libHt1Jv — Jim McGrath (@jgm41) April 21, 2018

EMBED >More News Videos How the Barbara Bush Foundation carries on the first lady's legacy.

HOUSTON, Texas (KTRK) -- George H.W. Bush honored his wife of 73 years and her commitment to family literacy by wearing a pair of socks adorned with books during Mrs. Bush's funeral.Barbara Bush's literacy foundation raised over $110 million.In 2013, Neil and Maria Bush founded the Barbara Bush Houston Literacy Foundation to carry on the former first lady's legacy as a champion of literacy.The foundation's mission is to improve the quality of life for Houstonians of all ages through the power of reading, writing, clear communication and critical thinking.The Barbara Bush Foundation helps increase awareness of the literacy crisis in America.Before she passed, her foundation donated money to the Barbara Bush Library to replace books destroyed by Hurricane Harvey.Mrs. Bush authored two children's books, C. Fred's Story and the best-selling Millie's Book, both of which have benefited literacy through proceeds from sales.About 1,500 people are expected at the private service Saturday at St. Martin's Episcopal Church.