Stories 76, 77, and 78:

Story 76:

In his leisure, the scientist built a time machine. He went back 75 years upon its completion. He engaged in society eagerly, especially taking pride in successfully introducing his grandparents to each other. Then he remembered that his grandfather had married twice--this was the wrong wife.

Story 77:

He said he would never forgive her. "Never" ended on July 12.

Story 78:

"Father's dying."
"Not again..."

Stories 74 and 75:

Story 74: He found life through death.

Story 75 (a trilogy):

1. I traveled back in time and successfully prevented Lincoln's assassination.

2. Upon returning to the present, I found life much improved.

3. A confederate sympathizer borrowed my machine. History returned to normal.

Stories 71, 72, and 73:

Story 71: The tree was the first of many to be felled that year.

Story 72: Nothing happened. Nothing would ever happen.

Story 73: The religious skeptic repented too late.

Stories 68, 69, and 70:

Story 68: Nobody showed up. They danced anyway.

Story 69: Swung the bat. Hit the ball.

Story 70: Destination: Paris. Fifty-three years late.

Stories 66 and 67:

Happy New Year!

Story 66:
They were in a cave. "Why is white dust everywhere?" asked one.

"It isn't dust," said his companion. "These are alien life forms. They've been spreading. Soon they will dominate the world."

"What makes you say that?"

The companion displayed his right arm, which was formed entirely of white dust.

Story 67:
One man. One camel. Everlasting desert. Survival's the ultimate victory.