Mighty Morphin Power Rangers (Hero Club)

Here is the translation of the Japanese text on the front cover into English.

At the top: ちんいオマケつき — Includes a small bonus or free gift. HERO CLUB — Hero Club, the name of the series or product line.

Large title in the middle: パワーレンジャー — Power Rangers.

Green text underneath the title: アメリカンヒーロー — American Heroes. パワーレンジャー大図鑑 — The Great Illustrated Encyclopedia of Power Rangers.

Bottom left: 日本語吹替版 — Japanese dubbed version.

Here is the translation of the back cover

At the top Mighty Morphin Power Rangers — The original English title of the series. セレクトオンリー (Select Only) — Probably a designation for the video series or product selection. The yellow text in the middle

1. アメリカンヒーロー、パワーレンジャー登場！

Translation: “The American heroes, the Power Rangers, make their debut!”

This introduces the Power Rangers as a new group of heroes.

2. パワーレンジャーの強さの秘密を大紹介!!

Translation: “A major introduction to the secret behind the Power Rangers’ strength!”

This refers to their powers, fighting skills, and special abilities.