Question: For which college did both Christian McCaffrey and his father Ed McCaffrey play football for?
Context: This article is a list of the current Denver Broncos broadcasters.  As of the start of the 2015 NFL season, the Broncos' flagship radio station is KOA 850 AM, a 50,000-watt station in Denver, Colorado owned by iHeartMedia.  Dave Logan is the play-by-play announcer; he starred for the Colorado Buffaloes before beginning his NFL career, spent mostly with the Cleveland Browns.  Ed McCaffrey is the color commentator.  Preseason games not selected for airing on national television were briefly on KCNC, channel 4, which is a CBS owned-and-operated station, as well as other CBS affiliates around the Rocky Mountain region, from 2004 through 2010.  The games had for years previously been on KUSA, channel 9, an NBC affiliate, and in 2011, the team went back to KUSA, which has higher news ratings. The Carolina Panthers joined the National Football League (NFL) in 1995 as the league's 29th franchise.  Their first ever selection was Kerry Collins, a quarterback from Penn State, in the 1995 NFL Draft.  The team's most recent first-round selection was Christian McCaffrey, a running back from Stanford, in the 2017 NFL Draft. Edward Thomas McCaffrey (born August 17, 1968) is a former professional American football player who was a wide receiver in the National Football League (NFL) for thirteen seasons.  McCaffrey played college football for Stanford University and earned first-team All-American honors.  The New York Giants chose him in the third round of the 1991 NFL Draft.  He also played for the San Francisco 49ers and Denver Broncos. Robert Bruce "Bob" Adams (born August 15, 1946) is a former professional American football tight end in the National Football League (NFL) and a spokesperson for the Church of Scientology International.  He attended El Camino High School during the 1960s, and was encouraged by a coach at the College of San Mateo to play football.  He played for a single season at the college, during 1966, while participating in other sports at the school including track-and-field and basketball.  A former coach of the College of San Mateo, Doug Scovil, recruited Adams to the College of the Pacific, where he received a full scholarship to play football there.  By 1968, he was captain of the team's offense at the school. Karl Brill was an American football player.  He played at the tackle position for the Harvard Crimson football team in 1904 and 1905 and was selected as a first-team All-American in 1905.  As a sophomore in December 1905, Brill announced that he would not continue playing football.  He said, "I came to Harvard to get a degree as a mining engineer.  For the last two years 'Varsity football has played havoc with my studies.  Already I have been forced to drop work in my freshman and sophomore years.  If I play football again it means that I shall fail to get my degree in four years, and I cannot afford a fifth.  It's either play football and fail to get a degree or abandon the gridiron and get a degree."  In addition to the toll the game had taken on his studies, Bill denounced football on moral grounds, stating that the human body was not mean to withstand the strain that football demands and adding, "I don't believe the game is right.  I dislike it on moral grounds.  It is a mere gladiatorial combat.  It is brutal throughout." Mariam Stepanyan (born 22 September 1989) is an Armenian professional footballer.  She currently plays for Armenia women's national football team.  Before to start play football she was a player of Armenian National woman's Team of Handball.  She starts to play football since 2007 in FC Banants.  Twice Armenian league champion with FC Banants.  After FC Banants twice was Armenian champion with Yerevan FC G.M and got best defenders title of the season. John Francis "Frank" Gargan (July 1, 1888 – August 18, 1960) was an American football player and coach.  He served as the head football coach at Georgetown University (1912–1913), Rensselaer Polytechnic Institute (1914), Fordham University (1916–1917, 1922–1926) and New York University (1920–1921), compiling career college football record of 55–40–8.  In 1917, Gargan was co-head coach with Frank McCaffrey for Fordham. Christian Jackson McCaffrey (born June 7, 1996) is an American football running back for the Carolina Panthers of the National Football League (NFL).  He played college football at Stanford, and was drafted by the Panthers with the eighth overall pick in the 2017 NFL Draft.  As a sophomore in 2015, McCaffrey was the AP College Football Player of the Year and the runner-up for the Heisman Trophy.  He holds the NCAA record for most all-purpose yards in a season with 3,864.  He is the son of former Stanford and NFL wide receiver Ed McCaffrey and former Stanford soccer star Lisa McCaffrey, who is the daughter of U.S. Olympian Dave Sime. Maxwell James McCaffrey (born May 17, 1994) is an American football wide receiver for the Jacksonville Jaguars of the National Football League (NFL).  He played college football at Duke and signed with the Oakland Raiders as an undrafted free agent in 2016. Tobin Bo Gunnar Gerhart (born March 28, 1987) is an American football running back who is currently a free agent.  He was selected by the Minnesota Vikings in the second round of the 2010 NFL Draft.  He played college football for Stanford University, and was a unanimous All-American.  In 2009 Gerhart won the Doak Walker Award and was the runner-up for the 2009 Heisman Trophy.  He received 1,276 points in the Heisman voting, coming in second to Mark Ingram Jr., who received 1,304 points; the 28-point margin was the closest vote in Heisman history.  Gerhart had a breakout senior season in 2009, leading all running backs in the nation in rushing yards, touchdowns, and points scored, and setting several Pac-10 and school records.  He held the Stanford record for most rushing yards in a season (1,871) until Christian McCaffrey broke it in 2015, but still holds Cardinal records for touchdowns in a season (28), and most touchdowns in a career (44).
Answer: Stanford University