Launch­ing their se­cond pic­ture book, Twin Cities writ­er Kev­in Kling and Du­luth il­lus­tra­tor Chris Mon­roe posed for photos, read and signed copies Sat­ur­day at Wild Rum­pus Book­store in the Linden Hills neigh­bor­hood of Min­ne­ap­olis. “Big Little Mother” is a­bout Kling’s re­la­tion­ship with his sis­ter. Kling and Mon­roe’s pre­vi­ous col­lab­o­ra­tion was “Big Little Brother,” pub­lished in 2011. The in­spi­ra­tion for that one? Kling’s re­la­tion­ship with his broth­er.