The International Center for the History of Electronic Games at The Strong in New York announced the recent acquisition of historical artifacts from Sierra On-Line, publisher of famed adventure game franchises including King's Quest, Space Quest and Leisure Suit Larry.

The collection, donated by Sierra On-Line founders Ken and Roberta Williams, "provides a window into the 20-year history of Sierra On-Line and a detailed look into how its most successful games were produced," according to The Strong.

Sierra's donated items include concept art, correspondence, and original copies of some of the company's best-known titles, along with curiosities like the King's Quest VII and Phantasmagoria player's guide pictured above. I wonder if there's a copy of Softporn Adventure tucked in there somewhere?