Man, I really went for a research detour when a bunch of other posting happened, but here's the WRs drafted in the first round since 1970...
1970: #10, New Orleans Saints, Ken Burrough, Wide Receiver, Texas Southern
1970: #15, San Diego Chargers, Walker Gillette, Wide Receiver, Richmond
1971: #4, Buffalo Bills, J.D. Hill, Wide Receiver, Arizona State
1971: #8, Pittsburgh Steelers, Frank Lewis, Wide Receiver, Grambling
1971: #16, Kansas City Chiefs, Elmo Wright, Wide Receiver, Houston
1971: #18, New York Giants, Rocky Thompson, Wide Receiver, West Texas A&M
1972: #4, St. Louis Cardinals, Bobby Moore (Ahmad Rashad), Wide Receiver, Oregon
1972: #9, New York Jets, Jerome Barkum, Wide Receiver, Jackson State
1972: #19, San Francisco 49ers, Terry Beasley, Wide Receiver, Auburn
1972: #21, Oakland Raiders, Mike Siani, Wide Receiver, Villanova
1973: #15, Cincinnati Bengals, Isaac Curtis, Wide Receiver, San Diego State
1973: #16, Cleveland Browns, Steve Holden, Wide Receiver, Arizona State University
1973: #19, New England Patriots, Darryl Stingley, Wide Receiver, Purdue
1973: #21, Green Bay Packers, Barry Smith, Wide Receiver, Florida State
1973: #25, San Diego Chargers, Johnny Rodgers, Wide Receiver, Nebraska
1974: #21, Pittsburgh Steelers, Lynn Swann, Wide Receiver, USC
1974: #24, Baltimore Colts, Roger Carr, Wide Receiver, Louisiana Tech
1975: #7, New Orleans Saints, Larry Burton, Wide Receiver, Purdue
1976: #11, Cincinnati Bengals, Billy Brooks, Wide Receiver, Oklahoma
1977: #25, New England Patriots, Stanley Morgan, Wide Receiver, Tennessee
1977: #26, Baltimore Colts, Randy Burke, Wide Receiver, Kentucky
1978: #3, New Orleans Saints, Wes Chandler, Wide Receiver, Florida
1978: #6, Green Bay Packers, James Lofton, Wide Receiver, Stanford
1978: #14, San Diego Chargers, John Jefferson, Wide Receiver, Arizona State
1979: #5, Buffalo Bills, Jerry Butler, Wide Receiver, Clemson
1979: #20, Cleveland Browns, Willis Adams, Wide Receiver, Houston
1980: #2, New York Jets, Johnny Lam Jones, Wide Receiver, Texas
1980: #18, Washington Redskins, Art Monk, Wide Receiver, Syracuse
1981: #10, Cincinnati Bengals, David Verser, Wide Receiver, Kansas
1981: #16, Detroit Lions, Mark Nichols, Wide Receiver, San José State
1982: #11, Kansas City Chiefs, Anthony Hancock, Wide Receiver, University of Tennessee
1982: #13, New Orleans Saints, Lindsay Scott, Wide Receiver, University of Georgia
1982: #19, Buffalo Bills, Perry Tuttle, Wide Receiver, Clemson University
1982: #20, Philadelphia Eagles, Mike Quick, Wide Receiver, North Carolina State University
1983: #18, Chicago Bears, Willie Gault, Wide Receiver, Tennessee
1984: #1, New England Patriots, Irving Fryar, Wide Receiver, Nebraska
1984: #4, Philadelphia Eagles, Kenny Jackson, Wide Receiver, Penn State
1984: #17, St. Louis Cardinals, Clyde Duncan, Wide Receiver, Tennessee
1984: #23, Pittsburgh Steelers, Louis Lipps, Wide receiver, Southern Mississippi
1985: #10, New York Jets, Al Toon, Wide Receiver, Wisconsin
1985: #13, Cincinnati Bengals, Eddie Brown, Wide Receiver, Miami
1985: #16, San Francisco 49ers, Jerry Rice, Wide Receiver, Mississippi Valley State
1985: #23, Los Angeles Raiders, Jessie Hester, Wide Receiver, Florida State
1986: #18, Dallas Cowboys, Mike Sherrard, Wide Receiver, UCLA
1986: #21, Cincinnati Bengals, Tim McGee, Wide Receiver, Tennessee
1987: #20, Houston Oilers, Haywood Jeffires, Wide Receiver, North Carolina State
1987: #27, Denver Broncos, Ricky Nattiel, Wide Receiver, Florida
1987: #28, New York Giants, Mark Ingram, Wide Receiver, Michigan State
1988: #6, Los Angeles Raiders, Tim Brown, Wide Receiver, Notre Dame
1988: #7, Green Bay Packers, Sterling Sharpe, Wide Receiver, South Carolina
1988: #11, Dallas Cowboys, Michael Irvin, Wide Receiver, Miami
1988: #15, San Diego Chargers, Anthony Miller, Wide Receiver, Tennessee
1988: #20, Los Angeles Rams, Aaron Cox Wide Receiver, Arizona State
1988: #27, Chicago Bears, Wendell Davis, Wide Receiver, LSU
1989: #13, Cleveland Browns, Eric Metcalf, Wide Receiver, Texas
1989: #16, New England Patriots, Hart Lee Dykes, Wide Receiver, Oklahoma State
1989: #22, Indianapolis Colts, Andre Rison, Wide Receiver, Michigan State
1989: #27, Atlanta Falcons, Shawn Collins, Wide Receiver, Northern Arizona
1990: Supplemental Draft, New York Jets, Rob Moore, Wide Receiver, Syracuse
1991: #10, Detroit Lions, Herman Moore, Wide Receiver, Virginia
1991: #12, Dallas Cowboys, Alvin Harper, Wide Receiver, Tennessee
1991: #13, Atlanta Falcons, Mike Pritchard, Wide Receiver, Colorado
1991: #23, Miami Dolphins, Randal Hill, Wide Receiver, Miami (FL)
1992: #4, Washington Redskins, Desmond Howard, Wide Receiver, Michigan
1993: #7, Chicago Bears, Curtis Conway, Wide Receiver, USC
1993: #16, Indianapolis Colts, Sean Dawkins, Wide Receiver, California
1993: #25, Miami Dolphins, O.J. McDuffie, Wide Receiver, Penn State
1994: #17, Pittsburgh Steelers, Charles Johnson, Wide Receiver, Colorado
1994: #21, Detroit Lions, Johnnie Morton, Wide Receiver, USC
1994: #24, New York Giants, Thomas Lewis, Wide Receiver, Indiana
1994: #29, Cleveland Browns, Derrick Alexander, Wide Receiver, Michigan
1995: #4, Washington Redskins, Michael Westbrook, Wide Receiver, Colorado
1995: #8, Seattle Seahawks, Joey Galloway, Wide Receiver, Ohio State
1995: #10, San Francisco 49ers, J.J. Stokes, Wide Receiver, UCLA
1996: #1, New York Jets, Keyshawn Johnson, Wide Receiver, USC
1996: #7, New England Patriots, Terry Glenn, Wide Receiver, Ohio State
1996: #18, St. Louis Rams, Eddie Kennison, Wide Receiver, LSU
1996: #19, Indianapolis Colts, Marvin Harrison, Wide Receiver, Syracuse
1996: #24, Buffalo Bills, Eric Moulds, Wide Receiver, Mississippi State
1997: #7, New York Giants, Ike Hilliard, Wide Receiver, Florida
1997: #15, Miami Dolphins, Yatil Green, Wide Receiver, Miami
1997: #16, Tampa Bay Buccaneers, Reidel Anthony, Wide Receiver, Florida
1997: #27, Carolina Panthers, Rae Carruth, Wide Receiver, Colorado
1998: #16, Tennessee Oilers, Kevin Dyson, Wide Receiver, Utah
1998: #21, Minnesota Vikings, Randy Moss, Wide Receiver, Marshall
1998: #30, Denver Broncos, Marcus Nash, Wide Receiver, Tennessee
1999: #6, St. Louis Rams, Torry Holt, Wide Receiver, North Carolina State
1999: #8, Arizona Cardinals, David Boston, Wide Receiver, Ohio State
1999: #13, Pittsburgh Steelers, Troy Edwards, Wide Receiver, Louisiana Tech
2000: #4, Cincinnati Bengals, Peter Warrick, Wide Receiver, Florida State
2000: #8, Pittsburgh Steelers, Plaxico Burress, Wide Receiver, Michigan State
2000: #10, Baltimore Ravens, Travis Taylor, Wide Receiver, Florida
2000: #21, Kansas City Chiefs, Sylvester Morris, Wide Receiver, Jackson State
2000: #29, Jacksonville Jaguars, R. Jay Soward, Wide Receiver, USC
2001: #8, Chicago Bears, David Terrell, Wide Receiver, Michigan
2001: #9, Seattle Seahawks, Koren Robinson, Wide Receiver, NC State
2001: #15, Washington Redskins, Rod Gardner, Wide Receiver, Clemson
2001: #16, New York Jets, Santana Moss, Wide Receiver, Miami (FL)
2001: #25, Philadelphia Eagles, Freddie Mitchell, Wide Receiver, UCLA
2001: #30, Indianapolis Colts, Reggie Wayne, Wide Receiver, Miami (FL)
2002: #13, New Orleans Saints, Donté Stallworth, Wide Receiver, Tennessee
2002: #19, Denver Broncos, Ashley Lelie, Wide Receiver, Hawaii
2002: #20, Green Bay Packers, Javon Walker, Wide Receiver, Florida State
2003: #2, Detroit Lions, Charles Rogers, Wide Receiver, Michigan State
2003: #3, Houston Texans, Andre Johnson, Wide Receiver, Miami (FL)
2003: #17, Arizona Cardinals, Bryant Johnson, Wide Receiver, Penn State
2004: #3, Arizona Cardinals, Larry Fitzgerald, Wide Receiver, Pittsburgh
2004: #7, Detroit Lions, Roy Williams, Wide Receiver, Texas
2004: #9, Jacksonville Jaguars, Reggie Williams, Wide Receiver, Washington
2004: #13, Buffalo Bills, Lee Evans, Wide Receiver, Wisconsin
2004: #15, Tampa Bay Buccaneers, Michael Clayton, Wide Receiver, LSU
2004: #29, Atlanta Falcons, Michael Jenkins, Wide Receiver, Ohio State
2004: #31, San Francisco 49ers, Rashaun Woods, Wide Receiver, Oklahoma State
2005: #3, Cleveland Browns, Braylon Edwards, Wide Receiver, Michigan
2005: #7, Minnesota Vikings, Troy Williamson, Wide Receiver, South Carolina
2005: #10, Detroit Lions, Mike Williams, Wide Receiver, USC
2005: #21, Jacksonville Jaguars, Matt Jones, Wide Receiver, Arkansas
2005: #22, Baltimore Ravens, Mark Clayton, Wide Receiver, Oklahoma
2005: #27, Atlanta Falcons, Roddy White, Wide Receiver, UAB
2006: #25, Pittsburgh Steelers, Santonio Holmes, Wide Receiver, Ohio State
2007: #2, Detroit Lions, Calvin Johnson, Wide Receiver, Georgia Tech
2007: #9, Miami Dolphins, Ted Ginn Jr., Wide Receiver, Ohio State
2007: #23, Kansas City Chiefs, Dwayne Bowe, Wide Receiver, LSU
2007: #27, New Orleans Saints, Robert Meachem, Wide Receiver, Tennessee
2007: #30, San Diego Chargers, Craig Davis, Wide Receiver, LSU
2007: #32, Indianapolis Colts, Anthony Gonzalez, Wide Receiver, Ohio State
2008: None selected in first round (10 picked in second round).
2009: #7, Oakland Raiders, Darrius Heyward-Bey, Wide Receiver, Maryland
2009: #10, San Francisco 49ers, Michael Crabtree, Wide Receiver, Texas Tech
2009: #19, Philadelphia Eagles, Jeremy Maclin, Wide Receiver, Missouri
2009: #22, Minnesota Vikings, Percy Harvin, Wide Receiver, Florida
2009: #29, New York Giants, Hakeem Nicks, Wide Receiver, North Carolina
2009: #30, Tennessee Titans, Kenny Britt, Wide Receiver, Rutgers
2010: #22, Denver Broncos, Demaryius Thomas, Wide Receiver, Georgia Tech
2010: #24, Dallas Cowboys, Dez Bryant, Wide Receiver, Oklahoma State
2011: #4, Cincinnati Bengals, A.J. Green, Wide Receiver, Georgia
2011: #6, Atlanta Falcons, Julio Jones, Wide Receiver, Alabama
2011: #26, Kansas City Chiefs, Jonathan Baldwin, Wide Receiver, Pittsburgh
2012: #5, Jacksonville Jaguars, Justin Blackmon, Wide Receiver, Oklahoma State
2012: #13, Arizona Cardinals, Michael Floyd, Wide Receiver, Notre Dame
2012: #20, Tennessee Titans, Kendall Wright, Wide Receiver, Baylor
2012: #30, San Francisco 49ers, A.J. Jenkins, Wide Receiver, Illinois
2013: #27, Houston Texans, DeAndre Hopkins, Wide Receiver, Clemson
2013: #29, Minnesota Vikings, Cordarrelle Patterson, Wide Receiver, Tennessee
2014: #4, Buffalo Bills, Sammy Watkins, Wide Receiver, Clemson
2014: #7, Tampa Bay Buccaneers, Mike Evans, Wide Receiver, Texas A&M
2014: #12, New York Giants, Odell Beckham, Wide Receiver, LSU
2014: #20, New Orleans Saints, Brandin Cooks, Wide Receiver, Oregon State
2014: #28, Carolina Panthers, Kelvin Benjamin, Wide Receiver, Florida State
2015: #4, Oakland Raiders, Amari Cooper, Wide Receiver, Alabama
2015: #7, Chicago Bears, Kevin White, Wide Receiver, West Virginia
2015: #14, Miami Dolphins, DeVante Parker, Wide Receiver, Louisville
2015: #20, Philadelphia Eagles, Nelson Agholor, Wide Receiver, USC
2015: #26, Baltimore Ravens, Breshad Perriman, Wide Receiver, UCF
2015: #29, Indianapolis Colts, Phillip Dorsett, Wide Receiver, Miami (FL)
2016: #15, Cleveland Browns, Corey Coleman, Wide Receiver, Baylor
2016: #21, Houston Texans, Will Fuller, Wide Receiver, Notre Dame
2016: #22, Washington Redskins, Josh Doctson, Wide Receiver, TCU
2016: #23, Minnesota Vikings, Laquon Treadwell, Wide Receiver, Ole Miss
2017: #5, Tennessee Titans, Corey Davis, Wide Receiver, Western Michigan
2017: #7, Los Angeles Chargers, Mike Williams, Wide Receiver, Clemson
2017: #9, Cincinnati Bengals, John Ross, Wide Receiver, Washington
2018: #24, Carolina Panthers, D.J. Moore, Wide Receiver, Maryland
2018: #26, Atlanta Falcons, Calvin Ridley, Wide Receiver, Alabama