[7] Copyright © 1951 by Henry Holt and Company, Inc.
[8] 理查德的昵稱。
[9] 傑弗裏的昵稱。
[10] Copyright © 1952 by Ziff-Davis Publishing Company.
[11] 利維的全名。
[12] Copyright © 1953 by Ziff-Davis Publishing Company.
[13] 英製長度單位，100碼u003d91.44米。
[14] Copyright © 1953 by Fantasy House, Inc.
[15] 迦南人的神明。
[16] 原文為希伯來語“zevuv”，蒼蠅的意思。
[17] Copyright © 1953 by Ballantine Books, Inc.
[18] Copyright © 1954 by Ballantine Books, Inc.
[19] 迪基、迪克都是理查德的昵稱。
[20] 指vehicle(交通工具)中的“h”。
[21] Copyright © 1956 by Columbia Publications, Inc.
[22] Copyright © 1957 by Fantasy House, Inc.
[23] Copyright © 1958 by Mercury Press, Inc.
[24] 一種特色混合飲料，既有不含酒精的，也有含酒精的，一般都含水果或果汁。
[25] 在希臘神話中，皮拉摩斯和提斯柏是一對命運多舛的戀人。
[26] Copyright © 1959 by Mercury Press, Inc.
[27] Copyright © 1961 by Ziff-Davis Publishing Company.
[28] Copyright © 1961 by Mercury Press, Inc.
[29] 在天鵝座中的一顆一等星，是已知最明亮的恒星之一。
[30] Copyright © 1962 by Hoffman Electronics Corporation.
[31] Copyright © 1965 by Mercury Press, Inc.
[32] Copyright © 1968 by Isaac Asimov.
[33] Copyright © 1957 by Fantasy House, Inc.
[34] Copyright © 1959 by Isaac Asimov.