He is married to former Dallas, Texas mayor Laura Miller, and he was a partner at the Dallas law firms of Baron & Budd, and Diamond & McCarthy.
Former Dallas mayor Laura Miller serves as Director of Projects, Texas, while former Secretary of Energy Don Hodel serves as Chairman and Senior Vice President for Strategy and Policy at Summit Power Group, Inc.
Some of the notable past covers of Texas Family have included Debbie and Roger Clemens, Joel and Victoria Osteen, Dana Vollmer, Ricardo Chavira, Laura Miller, and Whitney Ott.
Arthur Miller | Laura Bush | Glenn Miller | Henry Miller | Laura Ingalls Wilder | Barney Miller | Sienna Miller | Laura Nyro | Roger Miller | Laura Pausini | Dennis Miller | Laura Branigan | Reggie Miller | Miller | Miller Lite | Laura Linney | Laura Ingraham | Keith Miller | Glenn Miller Orchestra | Mitch Miller | Miller Brewing Company | Mac Miller | Laura Ashley | Julie Miller | Zell Miller | The Laura Ingraham Show | Steve Miller Band | Simon Miller | Laura Trott | Buddy Miller |
Heymann and fellow architects Michael Underhill and Laura Miller won a design citation from Progressive Architecture magazine in 1994 for their design of the Unitarian Universalist Fellowship of Ames, Iowa.