Folk artist Woody Guthrie has been heralded at gatherings across the country this year in celebration of his 100th birthday. The culminating event occurs this week in a concert featuring renowned artists whose lives and works have been influenced by his songs and writings. The collaboration between the Kennedy Center and the Grammy Museum tapped reams of documents for Guthrie’s musical and literary gems reflecting his fight for change throughout the world, concern for the downtrodden and love for his heritage.