# Rule 2 (A.A.U. Four-Wall Rules, 1 January 1920, historical)

> **Historical rulebook: not the current rules.** The current rules are here: https://handball.theperfectship.com/rules/four-wall/

Ball shall be Standard Rubber hand ball.

## Mentioned here

- [Ball](https://handball.theperfectship.com/ball.md)

How this rule changed: [wording in every rulebook](https://handball.theperfectship.com/rulebooks/clause-history/code-fourwall-american/2.md)

Rulebook: [A.A.U. Four-Wall Rules, 1 January 1920](https://handball.theperfectship.com/rulebooks/aau-fourwall-1920.md)

Source: Official Athletic Rules and Official Handbook of the Amateur Athletic Union of the United States (Spalding's Athletic Library, Group VII, No. 12A; American Sports Publishing Co., ©1920), rules in force January 1, 1920, pp. 118-120 (Library of Congress, gdc officialathletic13amat); reprinted from the same setting in the edition in force January 1, 1921, pp. 122-124 (officialathletic12amat). Public domain.