Jane Pauley digs into the mailbag for some correspondence from our viewers. Source

Two hundreds years ago, construction began on a 363-mile canal linking the Great Lakes to the Hudson River and New York City – an engineering and commercial triumph as revolutionary as the Internet. But the Erie Canal was dismissed at first. New York politician DeWitt Clinton spent 10 years fighting to sell the project to a deeply skeptical public, and Presidents Jefferson and Madison refused to help fund it. Yet the canal quickly changed the geography and commerce of the young nation. Richard Schlesinger reports on the history of the Erie Canal, still celebrated in song as an example of American ingenuity. Source

“I’ve got an old mule and her name is Sal, Fifteen years on the Erie Canal…” It’s a treasured melody that celebrates life on a canal boat in the 19th century. Singer Dave Ruch performs “Low Bridge – Everybody Down” (a.k.a. “The Erie Canal Song”), by songwriter Thomas S. Allen. For more visit www.daveruch.com. Source

Broadway musical legend Stephen Sondheim treasures the role that teachers have played in his life, and today helps honor educators with the annual Kennedy Center/Stephen Sondheim Inspirational Teacher Awards. In this web exclusive, Mo Rocca talks with Sondheim about the teachers who have inspired him, and visits with a recent award recipient, Tracey Rains of Gatlinburg-Pittman High School in Tennessee, whose selfless mentoring of student Chelsea Hayes was nothing short of life-altering. Source

In this web extra, New York Times bestselling author Louise Penny explains to correspondent Martha Teichner the qualities that went into her development of the character of Chief Inspector Armand Gamache, the central figure in her successful series of murder mysteries which began with her 2005 novel “Still Life.” Source

The singer-songwriter-producer, and the heart of the indie pop group Bleachers, has collaborated with some of the biggest artists of the day. In this preview of an interview to air on “Sunday Morning” July 9, Jack Antonoff talks with correspondent Tracy Smith about the key to creating music that connects to others. Source

Americans for Prosperity president Tim Phillips said the Congressional GOP should’ve started its session with a full repeal of the Affordable Care Act. Phillips added that lawmakers made a “mistake” by not acting sooner. Watch more of his “Red & Blue” interview with Elaine Quijano. Source

Tim Phillips, president of Americans for Prosperity, warned that his group wouldn’t step in to help GOP lawmakers who don’t support its agenda in 2018. He sat down with Elaine Quijano on “Red & Blue.” Source

President Trump arrived in Hamburg as protesters took to the streets. CBS News White House and senior foreign affairs correspondent Margaret Brennan joined CBSN from Germany to discuss what was likely to be on the discussion table at the G-20 Summit. Source

Matt Singer, managing editor for ScreenCrush.com, joins CBSN to talk about this week’s blockbusters. Source