Citations:ʻ

Spiritus asper in Wade-Giles Romanization
(Only used after (1) p, (2) t, (3) k, (4) ch (for ㄑ), (5) ch (for ㄔ), (6) tz, or (7) ts as a romanization of six Mandarin Chinese initials: ㄆ ㄊ ㄎ ㄑ ㄔ ㄘ. Note that in formal Wade-Giles, p (b), t (d), k (g), ch ㄐ (j), ch ㄓ (zh), tz (z), or ts (z) without a spiritus asper represent a different initial: ㄅ ㄉ ㄍ ㄐ ㄓ ㄗ.)

ㄆ as pʻ (p)
Examples: Ch'ing-chiang-p'u, En-p'ing, Ho-p'u, Hsia-p'u, K'ai-p'ing, Kuei-p'ing, Lo-p'u, P'an-chih-hua, P'an-ku, P'an-yü, Pei-p'ing, P'eng, P'eng-hu, P'eng-lai, p'i-p'a, P'i-shan, P'ien-kuan, P'ing-jang, P'ing-t'an, P'ing-ting-shan, P'ing-tung, p'in-yin, P'u-k'ou, P'u-t'ien, p'u-t'ung-hua, P'u-yang, Ssu-p'ing, Tse-p'u, Yüeh-p'u-hu

ㄊ as tʻ (t)
Examples: A-erh-t'ai, A-t'u-shih, Ch'ang-t'ai, Chao-t'ung, Ch‘ien-t‘ang/Ch'ien-t'ang, Erh-li-t'ou, Erh-lien-hao-t'e, Feng-t'ai, Ho-t'ien, Hsiang-t'an, Hsien-t'ao, Hu-ho-hao-t'e, Jih-t'u, Lan-t'ien, Lin-t'ung, Lo-t'ien, Lun-t'ai, Mai-kai-t'i, Men-t'ou-kou, Nan-t'ou, Nan-t'ung, Pao-t'ou, P'ing-t'an, Pok'ot'u, P'u-t'ien, p'u-t'ung-hua, Shan-t'ou, T'a-ch'eng, T'a-k'o-la-ma-kan, T'ai-an, T'ai-chou, T'ai-chung, T'ai-erh-chuang, T'ai-lu, T'ai-nan, Tʻai-pei, T'aitung, T'ai-tung, T'ai-wan, T'ai-yuan, T'ai-yüan, T'ang, T'ang-ku, T'ang-shan, T'ao-ch'eng, T'eng-ch'ung, T'ien-an-men, T'ien-chin, T'ien-ching, T'ien-men, T'o-k'o-hsün, T'u-lu-fan, T'u-men, T'uan-feng, T'un-hsi, T'ung-hua, T'ung-ling, Yen-t'ai, Yü-t'ien

ㄎ as kʻ (k)
Examples: A-k'o-su, An-k'ang, Chang-chia-k'ou, Chou-k'ou-tien, Fu-k'ang, Han-k'ou, Jih-k'a-tse, K'a-shih, K'ai-feng, K'ai-p'ing, K'ai-yüan, K'o-shih, K'o-tzu-le-su, K'o-tzu-lo-su, K'u-mi-shih, K'un-ming, K'un-shan, K'ung-tzu, Lao-ho-k'ou, Pok'ot'u, P'u-k'ou, T'a-k'o-la-ma-kan, Tan-chiang-k'ou, T'o-k'o-hsün, Yeh-i-k'o, Ying-k'ou

ㄑ as chʻ (q)
Examples: An-ch‘ing/An-ch'ing, Chao-ch'ing, Ch'i, Ch'i-ch'un, Ch'i-men, Ch'ieh-mo, Ch'ieh-shih, Ch'ien-chiang, Ch‘ien-t‘ang/Ch'ien-t'ang, Ch'in, Ch'in-chou, Ch'in-huang-tao, Ch'ing, Ch'ing-chiang-p'u, Ch'ing-hai, Ch'ing-ho, Ch'ing-tao, Chiu-ch'üan, Ch'iung-hai, Ch'ü-chou, Ch'ü-fu, Ch'üan-chou, Ch'un-ch'iu, Ch'ung-ch'ing, fan-ch'ieh, Fu-ch'ing, Huang-ch'i, Jo-ch'iang, Pan-ch'iao, Pen-ch'i, Shang-ch'iu, Su-ch'ien, Ta-ch'ing, Wu-ch'ia, Wu-ch'ing, Wu-lu-mu-ch'i
 * 1880, (translator), Strange Stories from a Chinese Studio, London: Thomas de la Rue & Co., Vol. I, page 300
 * So he bade good-by to Mr. Chiang, and set off for Fokien, his patron providing him with clothes and shoes, and the people of the place making up a subscription for him. On the road he met two traders in cotton cloth who were going to Fu-chʻing, and he joined their party; but they had not travelled many stages before these men found out that he had money, and taking him to a lonely spot, bound him hand and foot and made off with all he had.
 * 1880, (translator), Strange Stories from a Chinese Studio, London: Thomas de la Rue & Co., Vol. I, page 300
 * So he bade good-by to Mr. Chiang, and set off for Fokien, his patron providing him with clothes and shoes, and the people of the place making up a subscription for him. On the road he met two traders in cotton cloth who were going to Fu-chʻing, and he joined their party; but they had not travelled many stages before these men found out that he had money, and taking him to a lonely spot, bound him hand and foot and made off with all he had.

ㄔ as chʻ (ch)
Examples: Ch'ang-an, Ch'ang-chih, Ch'ang-chou, Ch'ang-ch'un, Ch'ang-pai, Ch'ang-sha, Ch'ang-t'ai, Ch'ang-te, Ch'ang-tzu, Ch'ang-yang, Ch'ao-chou, Ch'ao-shan, Ch'en, Ch'eng-te, Ch'eng-tu, Ch'i-ch'un, Ch'ih-pi, Chin-ch'eng, Chin-ch'uan, Ch'u, Chu-ch'eng, Ch'u-chou, Ch'u-hsiung, Ch'un-ch'iu, Ch'ung-ch'ing, Ch'ung-ming, Han-ch'uan, Ho-ch'uan, Hsi-ch'uan, Hsi-tsang Tzu-chih-ch'ü, Hsu-ch'ang, Hsü-ch'ang, Huang-ch'uan, Hun-ch'un, I-ch'ang, Ku-ch'eng, Liao-ch'eng, Ma-ch'eng, Nanch'ang, Nan-ch'ang, O-ch'eng, Pa-ch'u, So-ch'e, Ssu-ch'uan, T'a-ch'eng, T'ao-ch'eng, T'eng-ch'ung, Wu-ch'ang, Yeh-ch'eng, Yen-ch'eng, Yin-ch'uan, Ying-ch'eng, Yün-ch'eng, Yung-ch'ang, Yung-ch'un

ㄘ as tzʻ (c)
Examples: Tz'u-hsi, Tz'u-shan

ㄘ as tsʻ (c)
Examples: Lin-ts'ang, Ts'ai, Hai-ts'an-wei (see Hai-shen-wei)