I am a member of the Greater Omaha Genealogical Society. In its recent newsletter, it indicates a workshop at the library by Dennis Allen on
We have had Dennis Allen speak here on a few occasions, and I am sure we will have him again--he is an excellent and informative speaker--though we probably won't be doing this particular program at the library in the near future--usually we'll let a couple of years go by at least before repeating a program. He would indeed be a great person for you to talk to, since he and his partner are cemetery experts, and manage a cemetery themselves. If he has a handout, I would be happy to forward it to you, with his contact information.
He also does talks for the Lincoln-Lancaster Co. Genealogical Society, so that might be a forum where you could hear this talk.
We will be sorry to miss you!