@cypnk @andreas someone else asked the same question five years ago and it was answered! The text adventure game is "Mystery Mansion" and the FORTRAN code is available for your HP-1000E. https://gaming.stackexchange.com/questions/184834/which-game-is-this-you-are-in-the-gargoyle-garden
@andreas Not sure exactly, but the photo was taken by Trammell Hudson ( @th@social.v.st )