Any rectangular form that is wider than it is tall was classed as a horizontal slab. Like vertical rectangles, these are often two-sided markers, though many have some additional decorative features. Guitar player Roy Buchanan was buried in Arlington, Virginia beneath a standard rectangle horizontal slab in 1988. The table also includes a comments section with details on particular markers. You should always look at the picture yourself, because sometimes you will notice stylistic similarities not clear from the textual descriptions alone.
Some markers witness distinctive visitation behaviors.
This marker in Dayton Cemtery in Dayton, Indiana is for Shannon Hoon, the lead singer for Blind Melon , who died in 1995. Visitors to the grave have left offerings of various sorts. More intensively visited graves for folks such as Jim Morrison, Jimi Hendrix, Jack Kerouac, and Elvis Presley are swamped with offerings from fans who often journey a long way expressly to visit the grave. In many instances, visitors take something from a cemetery to remember their trip. The Kid's marker was stolen in 1950 and lost until 1976, and it was again thieved in 1981 and found within a week in California.