Describe what the main idea of the following text snippet is.
The man went to his father's old house and found a box of letters.
The main idea of this text snippet is that a man discovered a collection of correspondences in his father's former residence.
Complete the following task based on the instruction and optional input provided.### Instruction:
Describe what the main idea of the following text snippet is.

### Input:
The man went to his father's old house and found a box of letters.

### Output:
The main idea of this text snippet is that a man discovered a collection of correspondences in his father's former residence.