The better known period of his life spans from the 1850s to 1886.

It was built by three companies during the period spanning 1857 to 1867.

This period spanned the years from April 1037 through 1040.

These covered a period spanning four decades, from 1959 until the 1980s, and were on "a national scale".

That period spans the four years before and after the vaccine's introduction.

His active literary period only spanned between 1891-1898, because of mental problems.

In one 28-month period spanning 1985 through 1987, 28 percent of Americans were covered for less than the full 28 months.

This period spanned the years from 1131 through 1132.

After a period of construction spanning several months, the attraction soft opened to the public on June 9, 2012.

This period spanned the years from 1141 through 1142.